AMSOIL Synthetic Motor Oil
AMSOIL Signature Series 100% Synthetic Motor Oil delivers 75% more wear protection and 100% protection against LSPI, with a guaranteed 25,000-mile / 1-year drain interval — built for turbocharged and direct-injection engines. Order it from Tuned Yota, an Independent Authorized AMSOIL Dealer, shipped direct anywhere in the U.S.
Why AMSOIL Signature Series
- 75% more wear protection for longer engine life.1
- 100% protection against LSPI — safeguards modern turbo & direct-injection engines.2
- Guaranteed up to 25,000 miles or 1 year between oil changes.
- Purpose-built for turbocharged and direct-injection engines — and turbo vehicles use the normal-service interval, not severe.
Signature Series vs. XL vs. OE — which AMSOIL oil?
AMSOIL offers three synthetic tiers. Signature Series is the top tier — 75% more wear protection and up to a 25,000-mile drain. XL / Extended-Life adds 37% more cleaning power with a 20,000-mile guarantee. OE is the OEM-interval, API- and dexos-licensed choice with 47% more wear protection than conventional oil. For a towing or high-performance vehicle, choose Signature Series.
Products in this guide
1 75% more wear protection based on independent testing of AMSOIL Signature Series 0W-20 (ASTM D6891). 2 100% LSPI protection based on zero LSPI events in five consecutive GM dexos1 Gen 2 LSPI tests of Signature Series 5W-30.