Is AMSOIL Worth It?
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Is AMSOIL worth the extra cost?
AMSOIL costs more up front, but it's built to go further between oil changes — often eliminating an oil change per year — so you buy it less often, which helps offset the price while adding protection. For a tuned, supercharged or towing build, the added wear and heat protection is exactly where a premium synthetic earns its keep.
AMSOIL vs. conventional and Mobil 1
- 75% more wear protection for longer engine life (Signature Series 0W-20, ASTM D6891).1
- 100% protection against LSPI — critical for modern turbo and direct-injection engines.2
- Trusted by professional engine builders; surpasses leading standards for protection against horsepower loss, wear and sludge.
- Using AMSOIL does not void your vehicle manufacturer's warranty, and it's backed by the AMSOIL Limited Warranty.
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Become a Preferred Customer under Tuned Yota — wholesale pricing (up to 25% off retail), points, exclusive promotions and free gear. The membership pays for itself in about two oil changes.
Become a Preferred Customer →AMSOIL synthetic oil — FAQ
AMSOIL Signature Series is engineered to exceed minimum industry standards, is trusted by professional engine builders, and surpasses leading standards for protection against horsepower loss, engine wear and sludge.
AMSOIL Signature Series is guaranteed for up to 25,000 miles or one year in normal service (turbocharged vehicles use the normal-service interval). Always change the oil filter when you change the oil.
No. Using AMSOIL synthetic lubricants does not void your vehicle or equipment manufacturer's warranty, and all AMSOIL lubricants and filters are covered by the AMSOIL Limited Warranty.
AMSOIL for your Toyota or Lexus
1 Based on independent testing of AMSOIL Signature Series 0W-20 (ASTM D6891). 2 Based on zero LSPI events in five consecutive GM dexos1 Gen 2 LSPI tests of Signature Series 5W-30. Product recommendations are from AMSOIL's official materials; checkout completes on amsoil.com. Tuned Yota is an Authorized AMSOIL Dealer.