
AMSOIL synthetic motor oils achieved 100% protection against LSPI in industry-standard testing.

AMSOIL synthetic motor oils meet or exceed the latest performance specifications, including GM dexos1 Gen 2, ILSAC GF-6 and API...

Do you hear an engine knocking sound when you hit the gas? It could be due to pre-ignition or detonation....

First Signature Series Synthetic Motor Oil, then XL Synthetic Motor Oil. Now, OE Synthetic Motor Oil is our latest oil...

So, what’s new about reformulated XL Synthetic Motor Oil? In essence, XL protects better for longer, yet costs the same...