4-Stroke Marine Engine Oil SAE 25W-40

Lucas Oil Products, Inc.

4-Stroke Marine Engine Oil SAE 25W-40

Lucas 4-Stroke Marine Engine Oil SAE 25W-40 is designed to improve wear protection and increase catalyst life in newer inboards using catalytic converters. Meets or exceeds NMMA® FC-W (CAT) performance.

Can be used in automotive applications where API SM oils are called out for. Also has applications in 4-stroke outboards and 4-stroke personal watercraft. Lucas 4-Stroke Marine Engine Oil SAE 25W-40 is fortified with special synthetic additives that coat all moving parts to guard against rust, corrosion and moisture during long storage periods. Meets or exceeds MERCRUISER® sterndrive and inboard marine performance requirements.

Key Benefits

  • Improves wear and protection
  • Increases catalyst life
  • Meets or exceeds NMMA FC-W (CAT) Performance
  • Special additives protects against rust, corrosion, and moisture



  • #20677 - 1 Quart (Case of 6) - 946 mL
  • #10693 - 5 Gallon Pail (1 Pail) - 18.9 L
  • #10694 - 55 Gallon Drum (1 Drum) - 208 L



Product Spec Sheet Technical Data Sheet
Safety Data Sheet Safety Data Sheet

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Richard Moore uses Lucas Heavy Duty Oil Stabilizer for Truck

This stuff works great. I have a truck with a Cummins C Series engine with 637,000 miles on it. I started using Lucas Oil Stabilizer about 50,000 miles ago and my mileage is up, the engine runs quieter and I use no oil between changes. I change the oil every 10,000 miles and used to use about a gallon between changes. Now I use none.

Richard Moore


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