3 Gallon Case – Mercury Optimax DFI Oil 

Protect your Mercury or Mariner outboard with the 3 Gallon Case of Mercury Optimax DFI Oil —a high-performance 2-stroke marine oil engineered specifically for OptiMax and DFI (Direct Fuel Injection) outboards. Formulated to meet the extreme demands of modern 2-stroke engines, this oil delivers industry-leading wear protection, corrosion resistance, and cleaner combustion to help your outboard perform at its best.

Mercury Optimax minimizes carbon buildup that can reduce acceleration, top-end speed, and overall engine efficiency. Its advanced synthetic additives provide superior lubricity and resistance to scuffing, while a refined base-stock blend ensures consistent performance under reduced oiling rates and higher operating temperatures—common in DFI engines.

Ideal for all 2-stroke applications, including Mercury and Mariner OptiMax, DFI outboards, Jet Drive models, and Sport Jet engines.

Key Benefits of Mercury Optimax DFI 2-Stroke Outboard Oil

• Provides industry-leading wear and corrosion protection

• Minimizes carbon buildup for better throttle response and speed

• Helps maintain peak engine performance and fuel economy

• Reduces smoke for cleaner boating

• Engineered for high-heat, high-demand OptiMax and DFI engines

• Synthetic additives increase lubricity and prevent scuffing

• Fully approved for use in Mercury and Mariner OptiMax & DFI outboards

• Provides full warranty protection when used in qualifying engines

Whether you’re fishing, cruising, or running at wide-open throttle, Mercury Optimax DFI Oil ensures reliable lubrication, cleaner operation, and longer engine life. This 3-gallon case is the perfect choice for routine maintenance and high-performance outboards that demand the best.