Synthetic
Mercury Marine 92-858027K01 Premium Plus 2-Cycle Outboard Oil.

Specifically formulated with a higher concentration marine additive package to meet the needs of High-horsepower outboard including direct fuel-injected engines in extreme marine operating conditions.

Features:
1 Gallon (3.785 L) Bottle
Far exceeds Mercury in-house test standards, which are more stringent than the industry's TC-W3 standard
Cleanest burning - reduces carbon build-up in exhaust system
Superior lubrication
Meets all outboard and personal watercraft manufacturers' recommendations for use of TC-W2 and TC-W3 oils in pre-mix or oil-injected 2-cycle applications.
Provides warranty protection for Mercury, Mariner, Force and Sport Jet and M2 Jet Drive 2-cycle engines

Regular
Mercury Premium TCW 3 2 Stroke / Cycle Outboard Oil - Gallon - 92-858022K01 Specifically formulated with a marine additive package to meet the needs of low-to mid-horsepower outboard engines operating under general marine conditions. Exceeds TC-W3 standards. Reduces rust and corrosion of internal components. Meets all outboard and personal watercraft manufacturers' recommendations for use of TC-W2 and TC-W3 oils in pre-mix or oil-injected 2-cycle applications.