5 Best Synthetic Motor Oil  To Improve Performance & Longevity

Want to feed the best synthetic motor oil to your vehicle’s engine to ensure optimal performance with longevity? 

But feeling overwhelmed due to many options. Can’t figure out which stands out from the rest in quality, performance, protection, mileage efficiency, and price. 

Relax, and sip a cup of tea. As we have done everything for you to reduce your toil. Market research. Vehicle compatibility. Narrow down 5 synthetic oils with the most positive feedback. Write their unbiased reviews. Buying guide. FAQs. 

That means, this blog post is a treasure for choosing synthetic oil for your road companion. So without any more words, let’s get started.

Synthetic Oil Compatible Vehicles Brand & Model

Before deep diving to the point, it’s better to know the synthetic oils compatible vehicle types, brands, and models. So that you can relate whether synthetic oil is worth it for the vehicle that you have right now. 


There is no car enthusiast who doesn’t know the name of BMW. It’s a brand that brings multiple series luxurious, and high-performance cars including Series 3, 5, and 7. And all of these cars are compatible with most synthetic motor oil.


None can beat Mercedes-Benz cars for reliability and performance. Mercedes-Benz C, E, and S-Class cars are highly compatible with synthetic oil.


Do you love sports vehicles and own a Porsche car? Cayenne, 911 and Panamera from the Porsche brand are well-suited with synthetic motor oil.


Audi is the best due to its advanced technology and sleek designs. Synthetic oils are compatible with Audi brand’s A4, A6, and A8 model cars. 


If you have Toyota Corolla, Camry, or RAV4 cars. No worries, synthetic oil will be compatible with your car, increasing its reliability and long-lasting performance.


Need oil for Honda Accord, Civic, or CR-V to increase fuel efficiency. Synthetic oil is also here to meet your requirements. 


If you have Ford branded F-150, F-250, Mustang, Explorer, truck, SUV, or sports car. Synthetic oil will be the best fit for your engine. 

Apart from different branded cars, this oil is also compatible with motorcycles, lawnmowers, boats, power equipment, industrial machinery, and aircraft engines. 

Why Should You Choose Synthetic Motor Oil? 

Now, you know the vehicles which are compatible with synthetic engine oil. After that, you should also know the reasons and benefits of synthetic oils to justify its worthiness for your expensive vehicles and their engines. Some of the common reasons are

  • The high mileage, high-performing, and luxurious cars need synthetic oils because these oils are engineered to offer complete protection and prevention.
  • Synthetic oil can efficiently handle scorching weather like above 500° f. So, it can be a good choice for driving your car in high temperatures in Florida, Arizona, and Honolulu. 
  • This oil also flows faster than conventional oil, even in freezing weather. So, if you live in a cold regional area like Fairbanks, International Falls, and Barrow. It’s better to choose synthetic oil. 
  • Nobody likes frequent oil changing hassle, right? So to get a longer oil changing interval, you should choose synthetic oil. 
  • Your engine has to face more challenges during short trips or stop-and-go driving. At that time, the engine becomes more prone to wear and tear due to insufficient time to warm up. But, putting synthetic oil will help to protect the engine from this wear. 
  • If you have a truck and frequently haul heavy loads or tow a trailer. There is a high chance of the engine’s faster wear. Here, synthetic oil does the magic to effectively lube the engine and ensure maximum protection from wear and damage. 
  • Does your older engine become dull over time? Need better oil to rejuvenate its mileage efficiency. Synthetic oil is here to properly lubricate the engine’s metal parts and reduce engine wear.

These are some situations when synthetic oil is the lucky champ for you and your engine. If you are in any situation, you must choose synthetic oil. 

Best Synthetic Motor Oil Comparison Table

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Best Synthetic Motor Oil Reviews

1. Mobil 1 Extended Performance Motor Oil – Best Longer Oil Changing Pick


Aren’t you a car person with no scientific capacity to test motor oil effectiveness? But, need the best synthetic oil for your high-mileage car with a longer oil-changing interval. Mobil 1 extended performance Full synthetic 0w20 motor oil can be the right option from both sides. 

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Because it’s a 40+ years old and reputable company, many consumers highly recommend this oil, with 80+% positive feedback. 

They claimed they drove their 98′ Toyota Corolla with over 220K miles, 03′ Mercedes E500 with 216k miles, 08′ Range Rover Sport Supercharged with 180k miles, and 10′ Infiniti QX56 with 130k miles with this oil. 

Even the company guarantees that the oil can provide 20k miles between the oil change. Which is why you can enjoy smooth driving with no hassle of frequent oil changes. 

What does that mean? 

Simply it means you can rely on this synthetic oil to extend the longevity of your automotive baby. The secret of these top-notch performances is the Triple Action+ Formula, high-temperature resistance up to 500° F, oxidation control to maintain proper oil viscosity, and protection against timing chain wear. 

However, it is also excellent in cold temperature protection up to -40° F. The price per Oz cost is only $0.20, so you can define it as the best synthetic motor oil 0w20 for your high mileage vehicles. 

What We Like 

  • Ensure smooth rotation with proper lubrication 
  • Protect the engine from rust and corrosion to avoid immature damage
  • Keep the oil clean between the more extended oil change 
  • No toxic smell during pouring into the engine reservoir 

What We Don’t Like 

  • Customer service should be more friendly

2. Castrol 06037 Edge 5W-30 Full Synthetic Motor Oil – Best European Engine Pick


What if we suggest you a uniquely engineered synthetic oil for your European engine vehicles? 

That’s nice of you, right? 

This time, we chose the Castrol 06037 Edge 5W-30 Full Synthetic Motor Oil designed to meet the BMW, Benz, Mercedes, and VW’s engine manufacturer specifications. Even this oil is compatible with Gas engines with a 4-cyl turbo car.

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So, no matter if you have a BMW 3 Series, X5 model, Mercedes-Benz C-Class, Ferrari F8 Tributo, or Audi A4 luxurious car. You can unlock the maximum performance of your car with the Castrol Edge oil. 

The fluid titanium technology formula makes the oil 3 times stronger than many other oils to accommodate extreme pressure. So, when you drive the car in today’s high temp weather. The oil will efficiently handle all the pressure, boosting its performance and fuel efficiency.

Flowing the hard-reach area of the engine, prevents metal-to-metal contact and reduces deposit formation. The oil will do everything that you expect to prolong your engine life. You can consider it the best synthetic motor oil 5w30 for your European engine cars. 

What We Like

  • Provide ultimate protection up to 10k miles between the oil change
  • Increase thermal stability to reduce oil breakdown
  • Compatible with diesel, petrol, and turbocharged engines 
  • Maximize engine performance in both stop-and-go and long drives 

What We Don’t Like 

  • Price has a little bit gone up for inflation

3. Valvoline 878400 Full Synthetic Motor Oil – Best Protection Pick


Depending on the vehicle and its engine design, age, driving frequency, and maintenance history. Some engines, like turbocharged, require extra protection. 

Because generally, these engines produce more heat and struggle with stress during running. Even for running high mileage, the older engines become vulnerable over time. 

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So, considering all those things, Valvoline brings its  878400 model 5W-30 viscose synthetic oil to offer maximum protection. The cars, which have 2.0L, 2.5L, 3.0L, 3.8L 4.0L twin-turbocharged, or 6.2L supercharged V8 supercharged engine will be compatible with this oil.

Mostly Honda Civic, Ford Mustang Shelby, Chevrolet Camaro SS, BMW M3, and M4 cars come with these types of engines. You can confidently rely on the Valvoline oil if you have any of these cars. 

Now let’s look at the benefits that oil offers you.

According to the Sequence IVB and GMOD engine test, the oil is strong enough to provide at least 40% better wear and 25% deposit protection. Which are the two main culprits of your engine’s poor performance and early damage. 

What about friction protection and heat resistance? 

This oil is also excellent in these two fields. The high and low-temperature resistance will help the oil to accommodate your local weather conditions. So you can use it in both hotter and colder climates. And fast and easy flowing toward the engine’s internal components will ensure smooth rotation with no risk of friction. 

What We Like

  • Meet API, ILSAC GF-6A, GM dexos 1, and Gen 3 that ensures quality 
  • Superior engine protection to enhances performance 
  • Reduce deposits formation to keep the oil clean
  • 10 times better oil breakdown resistance improves fuel economy 

What We Don’t Like 

  • Sometimes it takes an extended delivery time, that should be fixed.

4. Pennzoil Ultra Platinum Full Synthetic 0W-20 Motor Oil – Best Cold Weather Pick

Struggling with your car’s starting, performance, and fuel efficiency in freezing weather? 

Want to feed your synthetic engine oil that will be great for winter, spring, and fall? 

If so, look beyond Pennzoil Ultra Platinum Full Synthetic Oil with 0W-20 viscosity grade. 

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When the other oil burned during a cold start and lost half a quart for every 2k miles. Pennzoil synthetic oil will offer little to no oil in the catch, no more extra oil consumption, and quieter engine performance. 

As this oil is formulated from Natural Gas with PurePlus Technology, many chemical engineers and car enthusiasts recommend it for colder climates. It’ll boost the engine mileage of your 640 HP turbocharged BMW V8 engine even at -40ºF. 

Due to not having any crude in the oil, it can prevent deposits and sludge formation. So that piston of your engine will remain cleaner, reducing fuel consumption and improving the economy. As a result, you can drive your car or truck extra 550 miles each year. 

In addition, as the oil has no crude, your vehicle won’t release too much CO2 emissions to the environment during burning. Indeed, you can’t wholly control releasing CO2 emissions when you burn oil. Here, reducing the amount is the best practice for environmental well-being.  

What We Like

  • High-quality oil with fewer impurities than many other oils
  • Versatile oil to use in ATVs, SUVs, light vans, and trucks 
  • Offer fast cold start in freezing weather conditions 
  • Ensure adequate lubrication to provide a smooth driving experience 

What We Don’t Like

  • It’s not recommended for Subaru

5. Shell Rotella T6 Full Synthetic 5W-40 Engine Oil – Best Diesel Engine Pick


The 5W-40 synthetic oil from Shell Rotella is versatile to fit your cars, motorcycles, and trucks with a diesel engine.

Some of its compatible vehicles are the Suzuki GSX-S1000F motorcycle, Ecodiesel Ram trucks, Chevrolet Silverado 2500HD, Dodge Ram 3500 heavy-duty pick-up, and Volkswagen Jetta TDI sedan. 

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That means whether you have a luxurious car for enjoyable long driving. A motorcycle for regular and faster commuting. A truck or pick-up for loading heavyweight and highway fleets. A tractor or lawn for agricultural use. This oil will be the right choice to accommodate all situations. 

The oil is made with advanced additives following Triple Protection Plus technology. So it can protect your high-pressure or older engine against deposits and wear. So, the engine and the oil remain safe to offer maximum performance

Due to the higher 5W-40 viscosity grade, the oil performs on top under extreme heat without breaking down. So living in a summer-based region, you can confidently use the oil for your high-performance vehicles. 

It meets API, Ford, Caterpillar, Cummins, and other industry and manufacturer standards for quality assurance. You must choose the Shell Rotella synthetic oil feeding the right food to your diesel engine.

What We Like  

  • Protect your engine exhaust catalysts with its low ash formulation
  • Easy flowing ensures faster reach to critical engine parts
  • Offer adequate protection against heat, dirt, and other impurities 
  • More power with higher torque will ensure peak mileage efficiency 

What We Don’t Like 

  • Sometimes the jug hit near the cap and leaked oil during shipment for poor packaging.

How To Choose The Best Synthetic Motor Oil?


There are some unique features in synthetic oil that you must check out before purchasing. Otherwise, you may choose the wrong one, which won’t be worth your car’s improvement. So, let’s have a close look in this buying guide to learn which features you should consider… 

Brand Reputation

In recent years, brands’ reputation has played an essential role in decision-making. The more reputation the brand has, the better its quality will be. And here, the API and ILSAC Certification will help you judge its quality. Because high quality is the way to earn popularity and brand reputation. 

However, Mobil 1, Pennzoil, Royal Purple, and Valvoline are some of the reputed and reliable brands in synthetic oil. So you can choose any branded oil to ensure the oil’s quality. 

Viscosity Rating

Viscosity ratings mean the fluidity or thickness of the oil in different temps. You can see the viscosity grade of the oil on its label, written in the ‘2’ digit and ‘W’ in the middle. 

Here, the first digit represents the oil’s viscosity at the lower temperatures of 0°F. The second digit represents the oil’s viscosity at the higher temperatures of 212°F. And the W represents winter. 

However, different viscose synthetic oils are available in the market. Like 0W-20, 0W-30, 5W-20, 5W-30, 10W-30, 10W-40, 15W-40, 20W-50. 

But, among them, 5W-30, 0w20, and 10W-40 are the best picks for your vehicles depending on the weather conditions. 

Additional Additives

Additional additives like zinc, phosphorous, and anti-wear agents work as a protective and preventive shield for your engine and its oil. These will ensure maximum protection from high temps, immature wear, and faster sludge formation. 

Moreover, Antioxidants will increase oxidation stability to reduce oil breakdown and increase its longevity. As a result, you can drive more miles with the same oil, improving fuel economy. 

Higher Mileage efficiency

You must choose the synthetic oil designed for the engine over 75k miles to ensure high mileage efficiency. So the oil will let your engine go extended miles with better flow. That puts a smile on your lip while experiencing enjoyable driving. And your engine also thanks you for getting the best food for its stomach. 

Prolong Engine Lifespan 

Keeping your engine well-optimized, excellent functioning, and smooth driving is always exciting without compromising its lifespan. And you get everything with prolonged engine life by choosing the right synthetic oil for your engine. 

Synthetic oil will do multiple jobs behind the scenes to prolong engine life. Like, properly flowing to lubricate all the metallic components for smooth rotation. Avoid metal-to-metal friction. Protect the engine from wear. And prevent sludge build-up. 

When your engine is treated with all those excellencies, automatically, its lifespan increases some more miles or years. So you can be tension-free about repairing the engine, which will cost you huge bucks. 


Some branded synthetic oils are more expensive than others. If you choose the oil for occasional use, that won’t impact your wallet. But, for regular commuting, there is no need to choose pricey oil that can break the bank. 

When everything goes up in price for high inflation, saving some bucks is beneficial. So, choose the oil that offers the same quality and protection but a bit lower price. 



Is full synthetic oil 100% synthetic?

Yes, full synthetic oil is 100% synthetic for Groups III, IV, or V bases. Here, ‘synthetic’ and ‘fully synthetic’ mean the same oil. 

How long is synthetic oil good for?

In terms of miles, it’s better to change synthetic oil every 7.5k to 15k miles. This oil-changing mileage interval will depend on your vehicle, temperature condition, driving skills, and habit. 

Does synthetic oil reduce mileage?

Absolutely not. Yet, synthetic oil increases mileage efficiency, fuel economy with better flowing, wear protection, and sludge prevention. 

Can I change synthetic oil every 2 years?

No, you can’t change synthetic oil every 2 years. Instead, you should change the oil every 6-12 months maximum to avoid many stop-and-go drives or miles. 


Choosing the best synthetic motor oil for your vehicles is a daunting job. But when you have a list of top-notch oils. It’s easy  to make an informed choice from the list. 

Grab the oil recommended by your manufacturer, meets your expectations, and fits your budget. When you can choose the oil combining all those criteria, your engine must perform at its best year-round. 

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