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10 Top-Rated Oils and Additives for High-Mileage Vehicles

Keep these oils and fuel treatments flowing through your engine to make it last.

high mileage additives
Sea Foam/Gumout/Pennzoil

Cars last longer than they did just a decade ago. According to the Bureau of Transportation Statistics, in 2016 an average car lasted 11 years, up from eight years a decade prior. So, if you drive an average of 13,000 miles a year, that puts you well over six figures of mileage by the end of your car’s lifespan. Thankfully, there are a variety of products for oil and fuel to keep your engine running longer.

Our Top Picks

No matter what you use, remember to change your fluids often, keep your ride clean on the topside and the bottom, and take it easy on the hard starts, hard brakes, and violent turns.

Top-Rated Synthetic Oils for Protecting Your Car's Engine

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Castrol Edge High Mileage Synthetic Motor Oil
Sea Foam High Mileage Motor Treatment
Sea Foam
Lucas High Mileage Oil Stabilizer
Slick 50 Recharged High Mileage Treatment
Slick 50
Valvoline High Mileage with MaxLife Technology Synthetic Blend Motor Oil
Techron Fuel Cleaner
Mobil Super High Mileage Oil
Gumout Fuel System Cleaner
Royal Purple High Mileage Synthetic
Royal Purple
Pennzoil High Mileage Motor Oil
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