Mercury Marine 92 Optimax Premium Plus 2 Stroke Marine Engine Oil Full Case FULL CASE. Mercury Marine Optimax engine oils are designed to function in extreme conditions in order to protect engines. Although every effort has been made to ensure 2-cycle engine oils are formulated to the optimum EPA standards for outboard use slight shear has resulted in some loss of lubricity with age and higher mileage. Mercury Marine 's Optimax engines use a synthetic blend of engine oils. Because 2-cycle engine oils are formulated to the optimum EPA standards Mercury 's Optimax engine oils do not break down under the extreme heat generated by outboard engines. Features of Mercury Marine 92-858037K01 FULL CASE 92 858037K01 Optimax Premium Plus 2 Stroke Marine Engine Oil Full Case Provides the maximum protection for Optimax and DFI engines even under the most extreme operating conditions Minimizes carbon build-up to help maintain engine top end speed and acceleration Superior lubrication for increased resistance to piston scuffing Will mix with typical 2-cycle engine oils Sold as a full case with three one gallon jugs Package Contents: Mercury Marine 92-858037K01 FULL CASE 92 858037K01 Optimax Premium Plus 2 Stroke Marine Engine Oil Full Case Mercury Marine 92-858037K01 FULL CASE: 92 858037K01 Optimax Premium Plus 2 Stroke Marine Engine Oil Full Case