AMSOIL pioneered synthetic motor oil in 1972 — and it's still the standard everything else is measured against. Get maximum protection and performance for everything you drive, haul, and ride.
From daily drivers to diesel rigs, motorcycles to marine engines — AMSOIL makes a premium synthetic formulation for it.
Signature Series, XL, and OE synthetic motor oils deliver superior wear protection, cleaner engines, and extended drain intervals.
Learn More »Ea® oil and air filters engineered to work with AMSOIL synthetic lubricants for maximum engine protection and efficiency.
Learn More »P.i.® Performance Improver, Diesel All-In-One, and Quickshot® clean injectors, boost power, and restore fuel economy.
Learn More »Synthetic ATF, gear lubes, and greases that hold up under towing, hauling, and extreme-temperature severe service.
Learn More »Purpose-built oils for motorcycles, ATVs, UTVs, dirt bikes, snowmobiles, and marine engines that get pushed hard.
Learn More »Heavy-duty synthetic diesel oils and additives that protect turbo-diesels, maximize fuel economy, and fight soot.
Learn More »Since 1972, AMSOIL has engineered synthetic lubricants that outperform conventional oils in independent testing — and in the real world.
Up to 75% more engine protection against horsepower loss and wear than required by a leading industry standard.*
Signature Series protects for up to 25,000 miles or one year — fewer oil changes, less waste, more savings.
Low-friction synthetic formulations reduce energy lost to drag, helping maximize fuel efficiency in every season.
Cleaner engines, reliable cold starts, and rock-solid protection under heat, towing, and stop-and-go traffic.
