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Top 10 Picks: Best High Mileage Synthetic Oils for 2022

We put the "Synthetic" in "Synthetic Oil"!

Positive feelings from past customers

  • Name brand

  • Good price compared to other brands

Negative feelings from past customers

  • The oil arrived 3 days late

  • The oil was sent 2 different types

The Mobil Full Synthetic High Mileage Motor Oil 5W-30 is a high-quality motor oil specially designed for vehicles with over 75,000 miles. This motor oil outperforms conventional oil and helps extend engine life. It is also effective in preventing sludge and deposit formation to help reduce engine wear. This motor oil has excellent resistance to oil breakdown and is able to maintain oil viscosity at high operating temperatures.


Mobil Full Synthetic High Mileage Motor Oil 5W-30 is designed for vehicles with over 75,000 miles. The motor oil provides guaranteed protection that is 1.5X longer than conventional and synthetic blend oils, up to 7,500 miles between oil changes*. The motor oil helps to prevent oil leaks, sludge, and deposit formation to help reduce engine wear with a balanced additive system formulation and extra seal conditioner. The motor oil provides excellent resistance to oil breakdown, for proven long-lasting protection, and maintains oil viscosity at high operating temperatures. The motor oil is recommended for all types of gasoline-powered vehicles, including those with turbocharged engines, and meets API SP resource-conserving.


The sentiment of the user reviews is mostly positive, with 83% of ratings being five stars. There are no one-star ratings.


According to user reviews, the Mobil Full Synthetic High Mileage Motor Oil 5W-30 is a great product that helps extend the life of your car's engine. It is also said to provide better fuel economy and protection against wear and tear. This motor oil is a great choice for those who have high mileage cars.

$22.99 AT AMAZON

Positive feelings from past customers

  • Noticed an increase in power from their engine

  • Good price

  • Excellent oil

K&N Motor Oil is a 5W-20 full synthetic engine oil that is designed for premium protection and performance. It is formulated with a unique combination of additives featuring K&N's advanced Synthamax technology. This motor oil helps protect your engine from wear and tear and can increase your engine's performance.


K&N Motor Oil is a premium full synthetic oil that helps keep your engine running like new. It is formulated with unique additives to help protect critical engine components and minimize harmful contaminants and sludge buildup. K&N ultra synthetic engine oil offers superior engine protection and reduces wear & tear. It also provides all weather protection, so your car can run smoothly in both cold and hot temperature conditions.


The vast majority of users who have left a review for this product are highly satisfied with it, rating it at 5 stars. There are no 1 star reviews.


According to user reviews, the K&N Motor Oil is a high quality, synthetic motor oil that offers premium protection and high mileage. It comes in a 4 quart size and is 5W-20 weight.

$24.99 AT AMAZON

Positive feelings from past customers

  • Perfecto

  • Good price - great product

  • Can’t be beat for price and value

  • It protects and conditions your engine.

  • Ecologico

Negative feelings from past customers

  • Can't be beat for price and value

Pennzoil Platinum High Mileage Full Synthetic 5W-30 Motor Oil is a full synthetic motor oil made from natural gas, not crude oil. It is uniquely engineered from our revolutionary PurePlus gas-to-liquid technology which is a patented process that converts pure natural gas into a high quality, full synthetic base oil. Because it is made from natural gas, the base oil contains fewer impurities than base oils made from crude oil, and when combined with our advanced additive technology, creates one of the best formulations in our Pennzoil high mileage portfolio. As your car ages, leaks may develop and cause higher oil consumption and oil burn off, potentially causing your engine to need frequent top-offs. Pennzoil Platinum High Mileage motor oil is enhanced with an excellent combination of special conditioning seal agents and additives to help stop leaks from seals and reduce the oil consumption that is typical of older and worn engines. Our full synthetic high mileage motor oil also protects engines from loss of horsepower, offers excellent performance in extreme temperatures, provides unsurpassed wear protection (based on Sequence IVA wear test using SAE 5W-30), and protection against abnormal combustion phenomenon like low-speed pre-ignition observed in modern turbocharged gasoline direct injection (TGDI) engines. Pennzoil Platinum High Mileage SAE 5W-30 is engineered to help keep engines clean by gently lifting deposits and keeping them away from critical moving engine parts In fact, it keeps pistons up to 45% cleaner than the toughest industry standards (Based on Sequence IIIH results).


The Pennzoil Platinum High Mileage Full Synthetic 5W-30 Motor Oil is a full synthetic 5W-30 engine oil made from natural gas, not crude, using Pennzoil's patented gas-to-liquid PurePlus Technology. It is designed for for vehicles with over 75,000 miles. Pennzoil Platinum High Mileage 5W-30 keeps pistons up to 45% cleaner than the toughest industry standard (Based on Sequence IIIH results). No other leading high mileage motor oil provides better protection from friction (Based on Sequence IVA wear test using SAE 5W-30). Formulated to deliver less oil burn off than high mileage motor oils made from crude oil. Helps protect engines from loss of horsepower. The single 5-quart bottle has an ergonomic design for easy handling and pouring. Provides faster low-temperature oil flow and protects in extreme heat.


Overall, users seem to be very pleased with the product, giving it an average rating of 4.5 stars out of 5. The vast majority of reviews are positive, with 88% of users giving the product a 5-star rating. Only 2% of users gave the product a 1-star rating, indicating that most users who have tried the product are very satisfied with it.


According to user reviews, the Pennzoil Platinum High Mileage Full Synthetic 5W-30 Motor Oil is an excellent product for vehicles over 75K miles. The oil helps to keep the engine running smoothly and efficiently, and also helps to extend the life of the engine. Users also report that the oil is easy to change and that it does not leave any residue behind.

$26.44 AT AMAZON

Positive feelings from past customers

  • It is a good value

  • It is one of the best full synthetics

  • It is very hard to find this oil

  • It is a good product

  • It is an original product

Castrol 03129C Edge High Mileage 10W-30 Advanced Full Synthetic Motor Oil is designed for maximum performance in vehicles with 75,000+ miles. The oil is engineered with fluid titanium technology to provide superior strength and help your vehicle to maximize performance. The oil also exceeds manufacturer's warranty requirements for applications requiring API SN (Resource Conserving) and ILSAC GF-5.


The Castrol 03129C Edge High Mileage 10W-30 Advanced Full Synthetic Motor oil is designed for use in vehicles with over 75,000 miles. The oil is formulated with titanium to maximize short and long term engine performance. The titanium technology also increases oil film strength and reduces film breakdown. The oil also reduces leaks, oil burn off and power-robbing deposits.


Most people who have reviewed the product have given it a 5-star rating, indicating that they are generally happy with the product. There have been no 1-star reviews.


According to user reviews, Castrol 03129C Edge High Mileage 10W-30 Advanced Full Synthetic Motor Oil is a top quality motor oil that helps to extend the life of your engine by providing superior protection against wear and tear. This motor oil is specially formulated for high mileage engines and is compatible with all types of vehicles. It is also affordable and easy to find in stores.

$31.22 AT AMAZON

Positive feelings from past customers

  • They seem to actually be getting higher gas mileage.

  • Their turbo’s sound more quiet than before.

Negative feelings from past customers

  • Overpriced

The Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil (1-Gallon) is a motor oil that features exclusive Triple Protection Plus technology, formulated with fully synthetic base oils plus advanced additives to protect against wear, deposits, and oil breakdown. It also provides better low temperature flow and increased fuel economy performance, without compromising durability, compared to conventional SAE 15W-40 oils.


Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil is a full synthetic 5W-40 diesel engine oil that uses Triple Protection Plus technology to protect against wear, deposits, oil breakdown, and improve low-temperature flow. It is designed for exceptional wear protection in a wide range of heavy-duty engine applications, from pickup trucks to tractors to semi rigs, and has the fuel economy capability of 1.5 percent without compromising engine protection or durability. It also has multi-functional dispersant additives that provide an enhanced level of protection against the effects of soot, dirt, and other contaminants, as well as increased shear stability for better viscosity control and optimal engine oil pressure. It has better cold-cranking properties and low-temperature pumpability for reaching critical engine parts faster, and comes in a single 1-gallon bottle with ergonomic design for easy handling and pouring. Additionally, its advanced low ash formulation helps protect the exhaust catalysts and particulate filters found on the latest low-emission vehicles.


The sentiment is overwhelmingly positive, with 90% of reviewers giving the product 5 stars. There are very few 1-star reviews, indicating that people either love or don't care about the product.


According to user reviews, the Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil is an excellent product that does an impressive job of keeping engines clean and running smoothly. This oil is designed specifically for diesel engines, and it provides excellent protection against wear and tear, helping to extend the life of your engine. The oil is also said to work well in extreme temperatures, both hot and cold, and it resists breakdown and sludge formation. Overall, users say this is an excellent oil for diesel engines and would recommend it to others.

$24.73 AT AMAZON

Positive feelings from past customers

  • It is cheaper than other oils

  • It meets all OEM standards

Engineered for high mileage vehicles Full synthetic motor oil SN PLUS Helps prevent sludge build-up and degradation of critical engine parts to help improve long term engine durability Formulated with a proprietary blend of base oils and additives to help maximize engine performance and fuel economy 5W-30 oil weight 1 quart bottle 6-pack The Amazon Basics High Mileage Motor Oil is a full synthetic motor oil that is engineered for high mileage vehicles. It is formulated with a proprietary blend of base oils and additives to help maximize engine performance and fuel economy. The oil has a 5W-30 oil weight and comes in a 1 quart bottle. The 6-pack is ideal for high mileage vehicles.


The Amazon Basics High Mileage Motor Oil is a full synthetic oil that is ideal for engines over 75,000 miles. It helps prevent build up that can cause rust and corrosion, reduces friction for less engine wear, and has a high resistance to viscosity and thermal breakdown. It also helps reduce exhaust emissions.


The sentiment is overwhelmingly positive, with 85% of reviewers giving the product 5 stars. There is a very small percentage of 1-star reviews, at just 1%.


According to user reviews, this AmazonBasics High Mileage Motor Oil is a great product that keeps their car running smoothly. Many users have noticed an improvement in their car's performance after using this oil. This oil is also said to be very affordable and a great value for the money.

$50.9 AT AMAZON

Positive feelings from past customers

  • It is good for cars above 150k miles

  • The price was right

Negative feelings from past customers

  • The engine noise is louder with this oil

Valvoline High Mileage 150K with Maxlife Plus Technology Motor Oil is a synthetic blend motor oil that is proven to offer high-mileage engines better protection against the four major causes of engine breakdown - wear, friction, heat, and deposits. The exclusive formula provides multi-dimensional engine defense protection including powerful detergents to keep your older engine clean of gunk, grime, and deposits, while curbing excessive oil consumption. Its anti-wear system surpasses industry standards with Moly Additive Protection to create a fine film layer between metal surfaces, minimizing friction to boost performance and power. Exceptional seal conditioners refresh aging seals to prevent leaks and keep oil where it needs to be. And the superior antioxidants help the oil maintain its effectiveness in extreme heat and cold operating conditions.


Valvoline High Mileage 150K with Maxlife Plus Technology Motor Oil is a motor oil designed to protect engines and reduce oil consumption. It contains a moly additive for protection, a multi-dimensional anti-wear system, and seal conditioners. It is also formulated to resist oil breakdown in tough conditions.


The product has received a lot of 5-star reviews, with a 84% positive rating. There are only 2% one-star reviews.


According to user reviews, Valvoline High Mileage 150K with Maxlife Plus Technology Motor Oil is a great product that helps keep engines running smoothly. It is also said to be very easy to use and has a long lasting effect.

$31.99 AT AMAZON

Positive feelings from past customers

  • Works well

  • Keeps engine running smooth and clean

  • Good price

  • Extended drain interval

Negative feelings from past customers

  • It is more expensive than other oils

  • It is not always in stock

  • It is afalse product

-Able to protect critical engine parts for up to 20,000 miles between oil changes -Formulated to help prevent leaks -Mobil 1’s Triple Action+ Formula -Specialty components in synthetic oil reduce friction -Provides 20X better internal engine heat protection than industry standards -Mobil 1 Extended Performance meets ILSAC GF-6 standards -Recommended by ExxonMobil for all types of modern vehicles -Available in 1-qt. and 5-qt. bottles


Mobil 1 Extended Performance High Mileage full-synthetic motor oil 5W-20 is designed for engines with over 75,000 miles. It can go up to 20,000 miles between oil changes.* Mobil 1’s Triple Action+ Formula combines engine performance, protection, and cleanliness with the added benefit of power. The oil meets ILSAC GF-6 standards to help provide low-speed pre-ignition (LSPI) and timing chain wear protection while keeping your engine clean and helping to improve your fuel economy. It also provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -40 degrees F). The oil helps extend engine life by working to prevent damaging deposits and sludge buildup.


Product has received a huge amount of 5-star reviews, with a five star percentage of 90. There are also a significant number of one star reviews, at 1%.


According to user reviews, the Mobil 1-123840 Extended Performance High Mileage 5W-20 oil is a great product that helps keep engines running smoothly. It is easy to use and provides excellent protection for high mileage vehicles. This oil is also affordable and provides good value for the money.

$32.47 AT AMAZON

Positive feelings from past customers

  • Good for older trucks

  • Mobil-1 quality

  • Perfect for me

  • Great price

  • Good oil

Negative feelings from past customers

  • The description of the product was not clear

If you're looking for an oil to help extend the life of your older vehicle, Mobil Super High Mileage 5W-30 is a great option. This unique oil helps reduce oil consumption, combat sludge, and prevent engine wear. 5W-30 has been one of the most commonly recommended viscosities of the last 20 years, so you can be confident in its performance.


The Mobil Super (112906-6PK) High Mileage 5W-30 Motor Oil is an automotive oil that is designed for high mileage vehicles. The oil is a 5W-30 weight oil and is made in the United States. The oil comes in a 1 quart bottle and is a 6 pack.


The sentiment is again very positive, with 81% of users giving the product a 5 star rating. Only 4% of users gave it a 1 star rating.


According to user reviews, this product is great for high mileage vehicles. It is a 5W-30 motor oil that comes in a pack of six 1-quart bottles. It is designed to help reduce wear and tear on engines, as well as improve fuel economy.

$38.37 AT AMAZON

Positive feelings from past customers

  • Great oil

  • Fast shipping

  • Good price

  • Good customer service

  • Extend engine life

Negative feelings from past customers

  • The oil burns quickly

  • The oil is not good for noobs

-Ideal for higher mileage engines -Reduces friction and prevents deposits and sludge buildup -Controls oxidation to prevent oil breakdown -Trusted and recommended by car builders and experienced mechanics -The Official Motor Oil of NASCAR(R)


*In normal service. Based on 5,000 miles/year.


The sentiment is overwhelmingly positive, with 87% of users giving the product a 5-star rating. There are very few negative reviews, with only 2% of users giving the product a 1-star rating.


According to user reviews, Mobil 1 High Mileage Full Synthetic Motor Oil 5W-30 is an excellent product that helps keep engines running smoothly and efficiently. This oil is designed for use in high mileage vehicles, and it provides superior protection against wear and tear. It also helps to improve fuel economy. Users report that this oil is easy to use and keeps their engines running smoothly.

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