Pennzoil (550022726-3PK) Outboard 2-Cycle Synthetic Marine Engine Oil - 1 Gallon, (Pack of 3) Formulated to keep your marine engine running clean Designed for outboard motors Guard against harmful engine deposits Protect against piston-scuffing Keep performance-robbing carbon deposits from forming in the combustion chamber, piston tops and under crowns and piston-combustion rings