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

AMSOIL 10W-40 Marine 4-Stroke Formula is a fully synthetic marine engine oil engineered to withstand the heat and stress of high-rpm operation in harsh marine environments. It delivers excellent wear protection and is fortified with rust and corrosion inhibitors to help protect engines during use, inactivity and long-term storage.

Key Benefits

• Excellent high-stress, high-rpm endurance

• Increased rust and corrosion protection for humid/wet environments

• Helps fight engine wear in severe marine conditions

• Designed to help prevent deposits, rust and corrosion

• NMMA certified for four-stroke marine applications (catalyst compatible)

Applications (Specifications / Approvals)

Use in gasoline-fueled four-stroke inboards, outboards, inboard/outboards, supercharged watercraft engines and personal watercraft where any of the following are specified:

• NMMA FC-W Catalyst Compatible

• API SM

• JASO MA

Change / Drain Interval (Service Life)

• Four-stroke outboard motors and personal watercraft: Change oil at the engine or watercraft manufacturer-recommended interval due to potential fuel dilution or water contamination.

• Inboard and I/O applications: Change oil at two times the engine manufacturer-recommended interval or 1 year, whichever comes first.

Note: Always confirm the required viscosity and specifications in your vehicle owner’s manual before use.