Sierra 10W-30 4-Stroke Conventional Catalyst Marine Oil Sierra 10W-30 4 Stroke Catalyst Engine oil is designed for modern 4-stroke recreational engines with or without emission catalyst systems...
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Add to CartENGINE OIL is a highly refined petroleum product formulated with premium base stock and highly refined additives. Specifically formulated to meet or exceed the tough requirements of the Marine 4-Stroke motor manufacturers, Mercury, Yamaha, Johnson-Evinrude, Suzuki and Honda.
It varies model to model, check out our Engine Oil Capacity Guide for more information and capacity charts!
California Residents:
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov