Best Synthetic Motor OilIf you strictly use the best synthetic motor oil, it almost goes without saying that your car’s engine performance will always be at its optimum. And who wouldn’t love it when their automobile is performing as it should? Besides, synthetic motor oil will increase the longevity of your car’s engine (read more) which in turn translates to lesser visits to your mechanic.

While the importance of using synthetic motor oil cannot be overstated, you have to know precisely which oil to go for to reap the maximum benefits. How do you go past the marketing hype? Are all oils the same? Does it matter which type of synthetic oil you use?

In A Hurry? This Is The Best:

Best Overall
Castrol 03057 GTX MAGNATEC 5W-30 Full Synthetic Motor Oil, Green , 5 Quart
  • For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.
  • Dramatically reduce engine wear
  • Leave critical engine parts 4X smoother* * As tested in the industry Sequence IVA wear test
  • Superior wear protection on critical engine parts
  • Meets Specifications: API SN Plus, ILSAC GF-5, GM dexos1 Gen 2, Ford WSS-M2C929-A, WSS-M2C946-B1
The truth is, just like any other market, the synthetic oils market is filled with an assortment of products, each promising to protect sensitive parts of your engine and improve overall performance. Choosing the best synthetic oil can, therefore, be somewhat confusing.

With this in mind, we delved into the market, analyzed the top brands and what they have to offer and compiled the following detailed best synthetic motor oil 2019 guide. The info provided here is to help you have an easier time selecting the oil that gives you the most value for your needs and budget.

Are you looking for a reliable and effective oil for your car but simply have no time to study all those synthetic motor oil reviews found online? Then you’ve landed in the right place. Check out our top products list below and select from some of the most popular products on the market.

10 Best Synthetic Oil – Updated Reviews 2020

Pennzoil Ultra Platinum 5W-20 Full Synthetic Motor OilBest All-Around Product Check Price
Mobil 1 5W-30 Synthetic Motor Oil (Editor’s Choice)Best Brand Check Price
Castrol 5W-40 Advanced Full Synthetic Motor OilBest High Mileage Synthetic Oil Check Price
Mobil 1 20W-50 V-Twin Synthetic OilBest Motocycle Motor Oil Check Price
Royal Purple 15W-40 High Performance Synthetic Motor Oil Best for Small Engines Check Price
Shell Rotella T6 Full Synthetic Engine Oil 5W-40Best for heavy duty diesel engine Check Price
Evinrude Johnson E-TEC XD 100 2-Cycle OilBest Lowest Price Product Check Price
Liqui Moly Premium 5W-40 Synthetic Motor OilBest EVER Produced Product Check Price
Pennzoil Platinum Full Synthetic Motor OilBest 5w30 Synthetic Oil Check Price
Pentosin Pento High Performance II Motor OilBest Rated Motor Oil Check Price

Pennzoil Ultra Platinum 5W-20 Full Synthetic Motor Oil – Best All-Around Product

How to Buy the Best Synthetic Motor Oil [Top] - Reviews & Buying Guide 2020Pennzoil has been in the business of making synthetic motor oils for a while now and have cemented their position as a top brand. We are talking about a brand that’s the official Ferrari oil supplier here, and it’s not surprising that their 550040863-6PK features in our best motor oil list.

PurePlus Technology – This oil is formulated using a unique technology that enables it to have lower viscosity even in temperatures as low as 13 degrees Fahrenheit. The viscosity, in turn, reduces the effort required by the engine to pump the oil when temperatures get low.

Superior Viscosity Control – In comparison to other oils in its class such as the API Group II and III base oil, the 550040863-6PK has better viscosity control more so in extreme severe oxidative conditions.

Longer Protection – One of the reasons you would want to purchase synthetic motor oils as stated earlier is to protect your engine. This oil scores excellently on that front as it all helps the engine preserve power for longer. Besides, it offers a faster flow of oil in low temperatures and protects the engine in extreme heat.

It may catch your attention to know that the Pennzoil 550040863-6PK has a protection certification of SN/GF-5. Additionally, this oil allows you to drive at an average of 550 miles annually.

  • Can be used in almost every other car irrespective of the manufacturer
  • You can rest assured that the sensitive parts of your vehicle’s engine are protected
  • Works well even in cold weathers
  • The oil is relatively pricey, but then again, its performance matches the price

Mobil 1 5W-30 Synthetic Motor Oil – Best Brand

How to Buy the Best Synthetic Motor Oil [Top] - Reviews & Buying Guide 2020If you’re scouting for the best synthetic motor oil for your diesel-powered truck that uses CD, CF or API oil, the Mobil 1 94001 5W-30 could as well be a remarkable option. Here’s why this oil is a top pick and what it can do for your car.

Versatility – The Mobil 1 can be used in any vehicle from turbocharged cars to supercharged gasoline as well as dual valve injected engines found in trucks, SUVs, and commuter vehicles. This is a general purpose oil that works well in vehicles that require a 5W-30 viscosity.

Outstanding Protection – This oil is designed to offer superior protection against wear. It helps keep your car’s engine exceptionally clean an action that has a direct positive impact on the performance of the vehicle. In essence, the SuperSyn anti-wear technology ensures the engine’s performance remains constant, even the harshest of conditions.

Great Viscosity – The 1 94001, just like all other synthetic oils from Mobil has the viscosity approved for all General Motors cars. Thus, if you own a Ford, Nissan or Chevrolet, this could as well be your to go for oil. It also happens to be the first choice oil for high-end automobile makers such as Corvette.

  • Brilliant wear protection and remarkable lubrication
  • Excellent control of oil breakdown
  • Clear-cut balance of performances
  • Cannot be used in high-performance racing motors or aviation engines

Castrol 5W-40 Advanced Full Synthetic Motor Oil – Best High Mileage Synthetic Oil

How to Buy the Best Synthetic Motor Oil [Top] - Reviews & Buying Guide 2020The 06249 EDGE 5W-40 is a carefully formulated synthetic oil that works by lessening volatility while shielding essential engine parts from damage and by extension enabling your car to operate efficiently. Find out why it’s one of the best synthetic oil for cars.

Superior Rating – The Castrol 06249 EDGE 5W-40 SPT boasts a 42% better rating when it comes to the ability of fight power-robbing deposits. Also, it offers better engine protection when pitted against conventional and synthetic blend oils.

Lessens Oxidation – As a car owner, you know how damaging oxidation can be to your vehicle. However, with a pack of 06249 EDGE 5W-40 SP you don’t have to worry about oxidation getting in the way of your auto’s performance. The oil’s components will work against vices such deposits, wear, and oxidation.

Compatible With a Variety of Cars – The best motor oil ought to, at the very least meet the viscosity standards set by various car manufacturers. This one meets Volkswagen 505.00, Porsche A40, Mercedes Benz 229.1 and BMW Longlife 01 viscosity recommendation.

  • Protects the engine, gearbox, and clutch
  • Reduces the likelihood of viscosity breakdown
  • Enables maximum engine acceleration
  • May not be suitable for some European cars

Mobil 1 20W-50 V-Twin Synthetic Oil – Best Motocycle Motor Oil

How to Buy the Best Synthetic Motor Oil [Top] - Reviews & Buying Guide 2020This Motor Oil, as the name suggests is designed for motorcycles. It works well with motorcycles that have a conventional engine and transmission lubrication system. The oil can also be used in bikes with a separate engine and transmission system.

Superior Friction Characteristics – This oil is formulated to provide the kind of lubrication that’s required to keep wet-clutch and transmission systems operating optimally. It exceeds the API Service Categories CD, CF, SH and SG and is thoroughly tested for maximum acceleration and power.

Improved High-Temperature Durability – This oil allows you to ride with confidence because you know it is designed to protect your motorcycle from high temperatures where most motor oils cannot hold up. The Mobil 1 96936 20W-50 will help maintain your bikes functionality when riding at high speeds or when sitting in traffic on a hot summer day.

Greater Fuel Economy – Because of its ability to withstand all weathers, the Mobil 1 20W-50 synthetic oil by extension helps improve your motorcycle’s fuel economy. It is carefully synthesized and distilled for maximum thermal and oxidation stability. This oil is optimized for air cooled or hot running engines for maximum lubrication when the engine is revving.

  • Works incredibly well in cold weather conditions
  • Gives consistent performance from day one
  • Protects the engine against dirt and other harmful deposits
  • Unmatched thermal breakdown
  • May not work as well when used in cars

Royal Purple 15W-40 High Performance Synthetic Motor Oil – best for small engines

How to Buy the Best Synthetic Motor Oil [Top] - Reviews & Buying Guide 2020Make no mistake about it; Royal Purple is a top brand when it comes to making of synthetic motor oils. As a matter of fact, it could as well be the best motor oil brand if you’re after better protection and enhanced performance for diesel and gasoline engines. Here’s what you should expect with the 05154.

A Host of Performance Advantages – The 05154 boasts the patented additive technology that prevents metal to metal contact inside the engine. It has a low coefficient of friction which in turn leads to increased fuel efficiency (the oil meets the fuel economy requirements of 5W-20 synthetic oils. The technology also prevents the lubrication starvation and white sludge that is common with cars using higher ethanol fuel. This, in turn, prevents rusting.

Can Be Used in Most Vehicles – The Royal Purple 05154 oil provides viscosity grades approved for API motor oils. It can, therefore, be used in most vehicles in the United States. It is important to note that if your car is new, you should wait until 2,000 miles before using this oil for a gasoline engine. For diesel engines, allow up to 10,000 miles before using the Royal Purple.

Easy to Upgrade –There’s no particular procedure when moving from other oils to Royal Purple. All you need to do (if your car is new) is to wait for the manufacturer’s first scheduled oil change, and you’re ready to go. Note that this oil is compatible with conventional motor oils.

  • Can be used in an array of vehicles
  • Better wear protection
  • Increased fuel efficiency
  • Excellent corrosion protection
  • Compatible with ethanol based fuels
  • Relatively expensive

Shell Rotella T6 Full Synthetic Engine Oil 5W-40 – Best for heavy duty diesel engine

How to Buy the Best Synthetic Motor Oil [Top] - Reviews & Buying Guide 2020Making it to our best synthetic motor oil list is this heavy duty diesel engine from Shell Rotella. This oil is ideal for off and on highway heavy duty applications. More specifically, it is the oil to go for if you have a modern, low emission engine especially those that require exhaust after-treatment when operating in exceedingly hot or cold conditions.

Low-ash Additive Technology – The Shell Rotella T6 5W-40 feature an improved, multi-functional technology to offer a highly responsive protection that consistently matches your driving conditions. It is formulated with low levels of ash, sulfur and phosphorous so that your car’s engine can maintain its performance.

The formulation further ensures that your vehicles’ emission is per the set regulations.

Exceptional Low-Temperature Flow – This oil’s viscosity offers an outstanding flow in temperatures as low as 30 degrees Fahrenheit. That way, the oil can provide unparalleled protection against stability degradation in comparison to other oils with the same viscosity.

Enhanced Fuel Economy Capability – The best synthetic oil should help you save on your fuel expenses. This oil uses Shell’s most advanced technology to cut down your fuel cost while keeping engine durability and protection intact.

  • Enables your engine to adapt to the changing driving environment
  • Responds remarkably well in cold temperatures
  • Helps reduce wear by up to 56% compared to standard motor oils
  • Cannot be used in gasoline engines

Evinrude Johnson E-TEC XD 100 2-Cycle Oil – Best Lowest Price Product

How to Buy the Best Synthetic Motor Oil [Top] - Reviews & Buying Guide 2020The Evinrude is specifically designed for direct injection, E-TEC outboard or oil injected outboard engines. The oil is formulated to give superior protection against wear and friction while ensuring that the engine is free of combustion waste. What’s more? Find out below;

Cleaner Combustion – The Evinrude Johnson 764357 is smokeless, burns clean and does not produce ash or odor. In essence, that means less emission and therefore a cleaner environment. It also means a longer engine life.

Protection in Extreme Conditions – Because it is based on free-flowing synthetic base oils, the Evinrude 764357 offers consistent pumping when igniting the engine in cold climatic conditions while remaining thick enough in high temperatures.

Remarkable Shear Stability – This oil is designed to resist viscosity loss through shear and can help maintain maximum pressure in the engine.

  • Can be used for old and new engines
  • Exceed the standard viscosity requirements
  • Evinrude has an excellent customer service desk
  • Affordable
  • Some customers have issues with the lubrication protection

Liqui Moly Premium 5W-40 Synthetic Motor Oil – Best EVER Produced Product

How to Buy the Best Synthetic Motor Oil [Top] - Reviews & Buying Guide 2020The Liqui Moly 2041 Premium brings to the fore the latest engine concepts for gas engines including timing configurations, variable cam, and multi-valve arrangements. It can also be used for inter-cooling and supercharging as well as turbocharging engines.

Extended Engine Life – One of the best motor oils in its class, the Liqui Moly 2041 Premium will increase your engine’s longevity thanks to a remarkably high level of protection against friction and wear.

Rapid Oil Delivery – Any car owner knows how important it is for consistent oil delivery into the engine especially in cold winter months or hot summer days. With this oil, you can be assured of consistent delivery of oil even at low temperatures.

Lubrication Reliability – Speaking of extreme weather conditions, your engine needs to stay lubricated irrespective of the climate. The Liqui Moly 2041 Premium promises a superior level of lubrication at high or low temperatures.

Excellent Engine Cleanliness – One of the reasons your engine’s performance may be compromised is when smoke and dirt deposits accumulate on the most sensitive parts. This oil is formulated in a way that will keep your vehicle’s engine free of debris and therefore better performance. The oil is also designed to reduce petrol consumption as well as pollutant emission.

  • Works well with a host of engines
  • Relatively smoother than most synthetic oils
  • Can only be used in petrol engines

Pennzoil Platinum Full Synthetic Motor Oil – Best 5w30 Synthetic Oil

How to Buy the Best Synthetic Motor Oil [Top] - Reviews & Buying Guide 2020If you have any doubts that Pennzoil is arguably the best motor oil brand in the crowded synthetic oil market, you may want to take note of what the 550022689-6PK has to provide. Based on its performance in engines, a lot of work went into formulating this synthetic oil. Here’s what it has to offer.

PurePlus Technology – This oil features the patented, pioneering gas to liquid technology that works by converting pure natural gas into a crystal clear base with lesser friction, superior low-temperature abilities and better stability than motor oil formulated from crude oil.

The Pennzoil 550022689-6PK base is 99.5% pure, with fewer impurities found in most conventional and synthetic motor oils. The additives in this oil help protect your engine even better.

Helps Maintain Cleaner Pistons – With this oil, you can rest assured that your car’s pistons will always be 40% cleaner than when using conventional oils.

Better Fuel Economy – The Pennzoil 550022689-6PK will help improve your automobile’s fuel economy which means that you will save money at the pump. As a matter of fact, by helping keep your engine clean, the oil will by extension enable you to drive an additional 550 miles every year.

  • Better protection from friction
  • Offers faster performance in extreme temperatures
  • Formulated with active cleansing agents
  • Recommended for severe driving condition
  • Some customers find this oil to be expensive, but nonetheless, it is not entirely out of reach

How to Buy the Best Synthetic Motor Oil [Top] - Reviews & Buying Guide 2020Wrapping up our best synthetic motor oil list is the from CRP Automotive. This highly rated synthetic oil will meet the lubrication needs of your gas or diesel engine and much more as outlined below;

Four Season Performance – The Pentosin 8042206 Pento will keep your engine’s performance at its optimum irrespective of the season. In other words, the oil will ensure that your engine runs consistently from winter, through autumn and summer.

Increases Oil Change Intervals – You want synthetic oil that will significantly reduce the number of visits to your mechanic or dealer for an oil change? Well, give this oil a try and you will, according to its manufacturer, experience longer oil change intervals.

Better Lubrication – One of the primary reasons you would want to use synthetic oil in your car is to protect the engine, right? This one promises way superior engine lubrication compared to traditional oils. Needless to say, when the engine is well lubricated, the performance improved and the longevity increased. Besides, a superior engine performance goes a long way in reducing exhaust emissions.

  • Highly affordable
  • Works well with diesel and gas engines hence versatile
  • Meets the specs of high-end motors including Passat TDI
  • May not work well with turbocharged engines

Best Synthetic Oil – Buyer’s Guide

Did you know that switching to synthetic motor oil you could lengthen the life of your engine? Not only that, but by choosing the best synthetic oil, you can boost fuel economy, extend the time between oil changes, and much more.
If you have made it to our review among the many synthetic motor oil reviews out there, then you probably are already considering switching. The problem is finding the best option out there that gives you the most for your money. Not only this, but it is crucial to find the ideal motor oil for your specific vehicle, the driving conditions, and overall use.

How to Buy the Best Synthetic Motor Oil [Top] - Reviews & Buying Guide 2020

Motor Oil is a hotly debated topic in today’s world since now more than ever people are becoming more environmentally conscious. While this is a good turn around, one of the biggest debates is synthetic versus regular oil. What is the downsides or benefits of each of these oils? People often assume ‘oil is oil’, but there are a few key differences between the two people should be aware of from the start.


How to Buy the Best Synthetic Motor Oil [Top] - Reviews & Buying Guide 2020The first thing people need to know about synthetic oil is that it comes from the ground like regular oil. Unlike regular oil, the synthetic version is refined, distilled, purified, and finally broken down into basic molecules. This process removes the impurities found in crude oil. This also means the individual molecules of the oil can be tailored to fit the unique demands of the more modern engines. These molecules have been customized to provide a higher level of performance and protection compared to regular oil.

How the oil is made into a synthetic base is only half of the equation though. There are additives that go into the oil mix to create the synthetic oil base people have come to use. Synthetics usually outperform regular oil for providing more protection for a car engine. Synthetic oils do come in different formulas, so there is always a risk when purchasing a synthetic oil brand that may have a bad formula. The price of synthetic oil can also vary, in some cases costing up to twice as much as regular oil.


How to Buy the Best Synthetic Motor Oil [Top] - Reviews & Buying Guide 2020Regular oil is often given a back seat since in most cases it’s cheaper than synthetic, but may not help a car perform better. Regular oil is taken from the ground and is refined to make it useable for cars. The downside is regular oil is often seen in a bad light since it is derived from petroleum. This oil is harmful to the environment, but so is synthetic. Regular oil also has a short shelf life compared to how long synthetic oil can last too.

The upside is regular oil is that it can be recycled. Large portions of regular oil that has been used can still be recycled and used again. The process is extensive, but it’s still an option. Regular oil may also put a bit more strain on the engine, but this varies from vehicle to vehicle.

There has been debate about how often your oil should be changed, but the rule of thumb still stands. Change your oil every 3,000 miles or three months depending on which one has come first. The type of oil used for the car does not matter. Synthetic oil is the better option for more modern cars, but regular oil may be recommended for older vehicles.

Why Synthetic Oil?

How to Buy the Best Synthetic Motor Oil [Top] - Reviews & Buying Guide 2020

In simple terms, synthetic oil is a lubricant that is formulated using artificially made chemical compounds. The oil can be manufactured using chemically modified ingredients or can be synthesized from other materials. To cut to the chase, synthetic motor oil is not made from crude oil and is relatively pure in comparison to conventional oils.

Synthetic oil is mostly used to substitute refined petroleum oil when the engine is operating in extreme temperatures. That, however, does not mean that synthetic oil cannot be used in normal weather conditions.

Take an aircraft engine, for instance. Because an aircraft’s jet engine operates at extreme conditions, it will perform way better with synthetic oil. The plane’s piston engine, on the other hand, may not require the use of synthetic oil. These oils are also used in metal stamping to offer environmental and other benefits.

There are many benefits of using synthetic oils over conventional oils in your engine. Below is a brief outline of the advantages of using synthetic oil in gas or diesel engine;

Superior high and low-temperature viscosity which in turn translates to better performance in extreme conditions

  • Higher viscosity index compared to conventional oils
  • Lesser evaporative loss
  • Excellent shear and chemical stability
  • Better protection against ash and other debris in the frail engine spots, which is particularly helpful in super or turbocharged engines. This benefit ensures less oil burn off and lesser probability of damaging oil passageway clogging
  • Resistance to thermal breakdown, oxidation and oil sludge
  • Better fuel economy when the engine is configured in a certain way
  • Longer engine life
  • Better fuel efficiency ranging from 1.8% to 5% on documented tests
  • Enhanced torque and horsepower caused by initial drag on the engine
  • Superior lubrication in extreme weathers

See? There is more to synthetic motor oil than you’d initially thought, right?

Types of  Motor Oil

  • Conventional Oil
  • Synthetic Oil
  • Diesel
  • Bio-Based
  • Hybrid (blend of conventional oil and synthetic oil)
  • Recycled oil

Types of Synthetic Oils

Synthetic motor oils come in different types. Even though the oils are formulated using the same concept, they may not necessarily be the same. It is important to note that choice of one type over the other is primarily determined by the engine you’re using and the machine it is running.

Below is a brief overview of various types of synthetic oils and what to expect with each type.

Full Synthetics

These are formulated using by-products from crude oil through a chemical process instead of the usual distillation process used to make conventional oil. Compared to other types, full synthetics have a more consistent molecular size as such have uniform properties. The American Petroleum Institute classifies these oils into API Groups III, IV, and V.

Group IV: PAO – Poly-alpha-olefin (PAO) is a polymer created by polymerizing an alpha-olefin. These oils belong to the API Group IV and are 100% synthetic. PAO is a particular type of olefin and is primarily used as a base stock when producing synthetic lubricants.

Group V – These are termed by API as any other type of oil that is not mineral oil. Group V synthetic oils are formulated using compounds known as esters. They are made by reacting hydroxyl compounds such as phenol or alcohol with an oxoacid. Esters are typically made from organic or inorganic acid in a process that involves replacing of a hydroxyl with an alkoxy. In simple terms, Group IV synthetic oils are made by condensing an acid with alcohol.

Semi Synthetic Oils

Semi Synthetic oils are also referred to as synthetic blends. They are typically a mixture of mineral and synthetic oil with less than 30% synthetic oil. They are meant to help motor vehicle owners enjoy the benefits of full synthetic oil without necessarily incurring the substantial costs.

The first semi-synthetic oil was introduced into the market in 1966 by Motul.

Oils that have synthetic base stocks of less than 30% but with relatively high performing additives comprising of esters can also be considered as synthetic lubricants.

Semi Synthetic Lubricants with Other Base Stocks

Some synthetic oils are formulated using API Group III and API Group III type base stocks. This is done to help formulate cheaper semi-synthetic lubricants. Group I-, II-, II+ and III type mineral base oil stock are used together with additive packages, esters and performance packages to formulate semi-synthetic-based oils.

While API Group III base oils are at times regarded as fully synthetic, they’re still categorized as highest top level mineral base stocks.

It is almost impossible to talk about the types of synthetic motor oils without mentioning a thing or two about additives. Synthetic lubricants come with additives that compose about 30% of the oil. The additives are meant to increase the viscosity and the performance of the oil. The most common additives include;

  • Pour-point depressants
  • Rust/corrosion inhibitors
  • Antioxidants
  • Dispersants
  • Foam inhibitors
  • Anti-wear agents
  • Detergents
  • Friction modifiers
  • Viscosity index improvers

Determining the best synthetic motor oil for your car based on the above choices boils down to a couple of external factors as outlined below;

  • The climate of your area of residence
  • Your driving habits
  • The age of your engine – with some oils such as the Royal Purple 05154 API-Licensed SAE 15W-40 High-Performance Synthetic Motor Oil can only be used if your car is past the manufacturer’s initial service mileage which means that you cannot use the oil in a new engine.

The manufacturer’s specifications may also determine the synthetic type oil to use. Be sure to check the recommendation before using any oil to avoid problems with your engine. Also, check the type of engine the oil is supposed to be used in. Some oils are exclusively used for diesel engines, others for petrol while some can be used in both. That said, it is always important to remember that synthetic oils are intended to improve your engine’s performance in extreme conditions while cutting the cost.

Now that you know that best synthetic oils for cars, the question then becomes, what should you look for when purchasing your oil? Does it matter which brand you go for? Does it mean that all oils are the same because they are formulated using the same procedure?

It almost goes without saying that to get value for your money, you must make a couple of considerations before spending your cash on any particular brand of oil. But, is it always that easy? No, it’s not, especially when you consider that various oils come with varying specifications.

Not to worry, though. Below is comprehensive synthetic motor oil buying guide that will bring you closer to find the ideal oil for your needs.

Important Factors to Consider When Choosing Synthetic Oil for Your Car

Before you hit the Buy Now button on your favorite online store, make sure that you’re well acquainted with the following factors;


This is perhaps the most important factors to consider when scouting for the best synthetic motor oil for your engine. In plain English, viscosity refers to the lubricant’s resistance to flow. In the automotive world, the viscosity is denoted as XW-XX. The number immediately after W is used to rate the oil’s flow at zero degrees Fahrenheit or -17.8 degrees Celsius. The letter W stands for winter and not weight as most motorists tend to think.

The lower the number preceding the W, the lesser the oil that thickness when exposed to cold temperatures. Thus, oil with a viscosity rating of 5W-30 thickens slower in cold conditions in comparison to synthetic oil with a viscosity rating of 10W-30.

That said, if you reside in an area with a colder climate, where motor oil is likely to thicken faster due to low temperatures, your engine will benefit from oil with a viscosity rating of 0W to 30W. A car in Death Valley, on the other hand, would require a higher number to prevent the oil from thinning too much.

What about the second number after the W?

Well, the number denotes the oil’s viscosity rating measured at 212 degrees Fahrenheit or an equivalent of 100 degrees Celsius. The number shows the oil’s resistance to thinning when exposed to high temperatures. For instance, 10W-30 oil will thin out at a faster rate at higher temperatures when compared to synthetic oil with a rating of 10W-40.

It is recommended that you go through your car’s owner’s manual to the best viscosity range the automobile.

That said, here’s a brief breakdown of viscosity ratings in various types of synthetic oils.

Full Synthetic Oils – Ideally, these oils undergo a rigorous testing process which in essence means that they have a better, longer lasting performance thanks to superior viscosity. They flow much better in low temperatures and will help maintain peak lubrication in higher temperatures.

Synthetic Blend Oils – As stated earlier on, these are a lower quality version of fully synthetic oils. Their viscosity rating isn’t as superior as full synthetic oils but will work well in high and low temperatures. If you’re on a budget, they can serve the purpose as well.

Fuel Economy

The other equally important factor to consider when buying synthetic motor oil is the fuel economy. The best motor oil should at the very least lower your car’s fuel consumption by 20%. The lesser friction the oil allows between the pathways of the engine, the greater the fuel economy which by extension means that you engine will require less effort to make air circulate. Needless to say, the higher the fuel economy, the lesser you will spend at the pump.

Frictional Properties and Lubrication

The best synthetic motor oil should lubricate and reduce friction of the moving parts in your car’s engine. Most formulations are designed to lessen friction, an action that further increases the longevity of critical engine components.

Special Additives

The more additives the oil has, the better it is when it comes to helping prevent oil leaks, sludge and debris accumulation in the engine. Speaking of additives, here’s what you should be on the lookout for.

Detergents – These helps get rid of deposits that lead to formation of high-temperature deposits, corrosion, and rust

Antiwear Additives – Whenever a lubricating film occurs, the oil breaks down. The antiwear additives help protect the metal surfaces.

Viscosity Index Improvers – These reduce the oils tendency to thin as the temperatures rise

Foam Inhibitors – Foaming in the oil is caused by the crankshaft pan rotating. When foaming occurs, the oil’s ability to lubricate is reduced. The inhibitors disperse the foam.

Friction Modifiers – These work by reducing the friction in the engine and improve mileage

Customer Reviews

One of the easiest ways to figure out which oil to buy is to read the synthetic oil reviews. What are previous users saying about the oil you want to buy? How are the ratings? What about the complaints. Almost every other customers who review a product on trusted online retailers such as Amazon gives an honest opinion with the aim of helping other buyers.

Thus by reading the reviews, you will most likely know what to expect with the oil. Of course, the best choice would be a highly rated unit.

Know the Terms

You’re more likely to buy the best oil for your car if you know a few terms revolving around motor oils. Here are the most important phrases;

Starting Viscosity – This refers to how easily the oil will enable your engine to start at cold temperatures. The lower the Starting Viscosity, the better.

Pumping Viscosity – This refers to the oil’s tendency to form gelled structures when the temperatures are low, which makes it difficult for the oil to flow. The lower the Pump Viscosity, the better.

Operating Viscosity – This refers to the oils ability to lubricate vital areas of the engine including the cylinder walls and the bearings when temperatures are as high as 250 degrees. The higher the Operating Viscosity, the better.

Oxidation Resistance – Oxidation causes the formation of acids and deposits in the engine, a situation that can increase the oil’s viscosity. Under extreme conditions, resistance to the resultant chemical is measured in minutes until oxidation occurs. Choose the oil with more minutes of resistance.

Volatility– This is the percentage of oil lost through evaporation or burn off when the engine is operational. The higher the percentage of volatility the better

Shear Stability – This is the percentage of viscosity lost when the engine is operational. It is a measure of how well the oil can retain viscosity when inside the engine. Lower percentages are better.

Acid Resistance – This refers to the oils ability to neutralize harmful deposits created in the process of fuel combustion and oil oxidation. Higher numbers are better.

How much should you spend?

There’s no way to tell how much you should spend on a motor lubricant. Even a cheap synthetic motor oil should do the trick as long as you pay attention to its specifications and ensure you get the right one for your car and season.

Unless you’re racing, you shouldn’t spend more than you need for the motor oil. What’s more important than picking the most expensive item on the market is to make sure that you change the oil in time. So if you have ridden your car for many thousands of miles, it’s time to change the engine oil.

How much does an oil change cost?

Why do all car owners always ask me how much does an oil change cost? as if I have a price list of every car ever built in my back pocket. My answer to that question is, not all cars get a 19.99 oil change price.

Believe it or not, most car owners are unaware of the increasing cost of an oil change based on engine size. Most 4 cylinders use 4 quarts of fluid, 6 cylinders use anywhere from 5-6 quarts of fluid, 8 cylinders use anywhere from 7-9.5 quarts.

I said all of that to say this, the more oil that your car uses the higher the cost of an oil change.

I’m also missing a key factor in the oil change cost that makes the cost of oil changes more than the average car oil change cost.

That one key factor is the use of synthetic oil that most high-performance cars require for performing at its peak potential.

The average cost of oil change from 4 cylinder cars to v12 cars

Wouldn’t it be nice to find oil change coupons for 19.99 oil change for any car no matter what the engine size is? I know that’s a far-fetched hope that won’t come to fruition.

Anyhow, like I mentioned earlier the more engine oil your car use expect an increase in cost. Your basic 4 cylinder engine oil change price will cost you on average without a specialty price is $40 and that is not including if you request synthetic oil.

V6 engines will never use the same quantity oil as its 4 cylinder counterparts being that the v6 engine produces more power and is larger in size.

V6 engines use anywhere from 5 quarts of oil to 6 quarts. the extra two quarts of oil in the v6 engine can cost you an extra $5 bringing your total to $45 again this price is without the request of the synthetic oil .

See where this is headed? the price only gets higher and higher. 8 Cylinder engines use a bunch of oil I have seen these engines use as much as 8.5 to 14 quarts of oil.

With the use of regular engine oil, the cost goes up $5 increasing your expense from $45 to 50

Let’s talk about the big dog of engines, and that’s the v12 engine. Anyone who owns a v12 vehicle is a more than likely very affluent person with a bank account with 7 digits.

I’ve seen these engines use 14 plus quarts of engine oil. all v12 engines use only synthetic oil. Try using any other oil and run the risk of destroying your engine.

The performance output of the engine will evaporate conventional motor oils. I’ve done the oil change on Bentley’s and Aston martins and seen customers pay as much as  $800-1500.

The only good this about that price is those supercar owners pay that price sometimes once out of the year because the of the car is low.

How long does an oil change take? If you do this it will take up to 1 hour

As you’re sitting in the waiting area distracted by your friend’s Instagram post, you quickly realize that you are still  at a repair shop and waiting for your car to be finished.

You say to yourself, What the hell are they doing to my car? and How long does an oil change take? In a perfect world without distractions, an oil change at its simplest process can take 20 minutes.

Most car owners do not know the process it takes to change the oil in a car. It’s not just an oil change, there is more to it than just draining the oil from the car. 

The oil change process step by step

what is the process of an oil change? it goes like this. The technician first set your car on the lift. Every car is not that simple to put on a lift because their undercarriages are different.

Some cars have running boards that you can not pick up so simply. lift extensions are needed to prevent from damaging or crushing the running boards.

Before the car is lifted, the hood is opened and these few things are checked. The air filter is checked, AC cabin filter, power steering fluid level, and headlight/tail light bulbs.

After the car is in the air, oil drain plug is located and removed to start the oil change process.

The oil filter is located  and removed and replaced with a new one.

While the car’s oil is draining the technician makes use of the time and checks the tires for damage, wear, nails and adjust the tire pressure all at the same time.

The technician reports to the service writer with his findings and the recommended car maintenance.

The technician returns back to the car to complete the remainder of the oil change while you as the customer is being pitched to on why you should buy extra maintenance services, and repairs.

The oil drain plug is reinstalled and a new oil filter is added as well. The vehicle is then lowered, oil is filled to its maximum level and the process is complete.

The reason why oil change can be as long as 1-hour

wheel lock and wheel lock key– Wheel locks and wheel lock key can become damaged or unable to locate resulting in downtime causing your visit to be longer. Removing the wheel lock if damaged can take up to an hour sometimes.

Air filter- Having to replace the air filter can be slightly easy depending on which model vehicle you have. Some cars require more labor causing you to wait an extra 30 minutes.

Cabin filter- The cabin air filter on most cars is located behind the glove box. All cars are not created equal and some require you to cut and remove screws as with the 2000 honda accord.

Tire rotation and balance- After being at the repair shop for 30 minutes already the service writer recommend that you rotate your tires and balance them this can take up an additional 20 minutes.

Tire patch- While your car’s oil and filter, is being changed the technician saw that you had a nail protruding from your tire.

Service writer  reminds you of the danger and you agree to get the hole patched. When patching a tire from the inside the tire has to be removed

When patching a tire from the inside the tire has to be removed and the tire has to be balanced after the repair.

This process can take an additional 30 minutes at times.

Stripped oil drain bolt- Unfortunately not all technicians are created equal. Some mechanics are hacks they break and destroy everything in their path when maintaining and repairing your vehicle.

When an oil drain bolt gets badly damaged you will need to extract it and the process can take up to 30 minutes.


We hope this guide choosing the best synthetic engine oil has helped you. We use and recommend each product on this list, but if we had to pick one, we would vote Royal Purple as the best synthetic motor oil.

The importance of using synthetic oil in your car cannot be overemphasized. You certainly want your car performing at its best with fewer visits to the mechanic or dealer for engine repairs. That said, when shopping for the best synthetic motor oil, it is imperative that you should know what you want and what to look for in the oil of your choosing.

That, in most cases, is easier said than done – and that’s the reason we’ve pieced up together the best synthetic oil reviews so that you can have an easier time selecting the ideal product for your car. The oils suggested here are highly rated and proven to work as advertised. In short, with this guide, you don’t have to gamble with your money only to end up with the wrong product. So, choose the oil that meets your needs and hit the Buy Now button, after all, you’re buying from the point of information!

Taking care of your vehicle can become quite expensive because you need many products to look after your vehicle’s different parts. Oil protects your engine, which is a vital part of your vehicle if you want to travel at all. It’s worth paying a little extra to ensure you give your car the best. Luckily, many well-known brands offer motor oil at reasonable prices.