Shop AMSOIL 4 Stroke Motor Oil

25W-40 Synthetic Blend Marine Engine Oil

Protects Against Wear : Marine engines operate under high loads and rpm for extended periods. On average, a marine engine powering a boat 30 mph runs at about 5,000 rpm. In contrast, an automotive engine powering a car 60 mph runs at about 2,000 rpm. Higher stress causes traditional automotive oils to break down and lose viscosity. AMSOIL 25W-40... read more

Brand: AMSOIL • Product Code: WCM

SAE 10W-30 Formula 4-Stroke® Marine Synthetic Motor Oil (WCT)

AMSOIL 10W-30 Formula 4-Stroke® Marine Synthetic Motor Oil (WCT) is a premium quality synthetic formulation engineered for the harsh operating conditions of marine environments. It withstands the intense mechanical action of continuous, high RPM operation to deliver superior viscosity protection. Formula 4-Stroke® Marine Synthetic Motor Oil... read more

Brand: AMSOIL • Product Code: WCT

Briggs & Stratton Synthetic 4T Racing Oil (GBS2960)

Stock and modified small-displacement racing engines are subjected to extreme heat and elevated rpm that literally tear apart inferior oils. Viscosity loss and oil foaming can result, inviting wear and catastrophic engine failure. AMSOIL combined its extensive experience formulating high-performance synthetic lubricants with the engine-building expertise... read more

Brand: AMSOIL • Product Code: GBS2960

10W-40 Formula 4 Stroke® Synthetic Scooter Oil (ASO)

AMSOIL Formula 4-Stroke 10W-40 Synthetic Scooter Oil is formulated specifically to meet the special needs of today's high-tech air and water-cooled four-stroke motorized scooters, offering outstanding wear protection and friction reduction for longer equipment life and cooler operating temperatures. Its exceptional shear stability provides consistent... read more

Brand: AMSOIL • Product Code: ASO

10W-40 Synthetic Formula 4-Stroke Marine Oil (WCF)

AMSOIL Formula 4-Stroke® Marine Synthetic Motor Oil is a premium-quality synthetic formulation engineered for the harsh operating conditions of marine environments. It withstands the intense mechanical action of continuous, high-rpm operation to deliver superior viscosity protection. Formula 4-Stroke Marine Synthetic Motor Oil is specially fortified... read more

Brand: AMSOIL • Product Code: WCF

5W-30 Synthetic Small Engine Oil - Commercial Grade (AES)

Engine dependability is vital to running a profitable business, yet most small-engine oils we've tested are nothing more than re-labeled automotive oils, which are formulated with fuel economy in mind, not durability. That won't cut it. Compared to liquid-cooled automotive engines, small engines run hotter; operate under constant load; generate more... read more

Brand: AMSOIL • Product Code: AES

0W-40 Formula 4-Stroke® PowerSports Synthetic Motor Oil (AFF)

AMSOIL Formula 4-Stroke® PowerSports Synthetic Motor Oil (AFF) is specially formulated for ATVs, UTVs, snowmobiles and other power sports applications. Its broad viscosity range and wax-free formulation make it excellent for use in both hot and cold temperature extremes. As an SAE 40 weight motor oil, AMSOIL AFF provides outstanding protection... read more

Brand: AMSOIL • Product Code: AFF

10W-30 Synthetic Small Engine Oil - Commercial Grade (ASE)

Using a high-quality small-engine oil has a direct effect on efficiency and profitability. Over time, wear and deposits rob small engines of power, reducing productivity. High heat can cause oils not formulated for severe service to boil off, leading to increased oil consumption, forcing the work crew to continually top-off the oil. AMSOIL Synthetic... read more

Brand: AMSOIL • Product Code: ASE