Extreme Duty Marine SAE 20W-50 Engine Oil

Lucas Oil Products, Inc.

Extreme Duty Marine Engine Oil SAE 20W-50

Lucas Extreme Duty Marine SAE 20W-50 Engine Oil is designed for use in high performance boats requiring the ultimate protection.

Lucas Extreme Duty Marine SAE 20W-50 Engine Oil is manufactured with the highest quality paraffinic base oils and is fortified with an exclusive additive package containing high levels of Zinc, Moly and Phosphorus that provides a tougher, thicker additive film for maximum protection even under the most severe conditions. It lowers oil temperatures, extends oil life and minimizes metal fatigue.

Lucas Marine SAE 20W-50 improves the film strength between the cylinder  wall and piston rings and slows oil burning while improving pressure levels in worn engines. It has good cold temperature properties and stands up to high operating temperatures. This product is compatible with methanol and all racing fuels.

Key Benefits

  • Excellent for use with supercharged, turbo charged or nitrous oxide high performance engine
  • Safely blends and is compatible with synthetic and non-synthetic oils
  • Petroleum and semi-synthetic SAE 20W-50 grades
  • Contains effective anti-wear agents, detergents, Lucas unique additive chemistry and friction modifiers (molybdenum) to provide the ultimate performance
  • Proven performance in marine applications
  • Compatible with methanol and all racing fuels
  • Zinc and phosphorous chemistry provides excellent boundary lubrication at start up (contains 0.31% zinc)
  • Conventional grade is factory fill for ILMOR high performance engines


  • #10653 - 1 Quart (Case of 6) - 13 lbs
  • #10810 - 5 Quart (Case of 3) - 31 lbs
  • #10665 - 5 Gallon Pail (1 Pail) - 40 lbs
  • #10666 - 55 Gallon Drum (1 Drum) - 440 lbs


Product Spec Sheet Technical Data Sheet
Safety Data Sheet Safety Data Sheet
zinc Zinc Values

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Steven George uses Lucas Fuel Treatment in Diesel Truck

My name is Steven George, I am a truck driver and I have been driving since the early 80's. Its common for a truck to get from 4 to 5 miles to the gallon. I went to a truck show in Las Vegas, NV. I seen your product, and didn't really believe what was being told about it. I tried it for 6 weeks like he asked, and he said I would see a world in difference in my truck. The difference was outstanding. I went from 5.3 mpg to 7.2 mpg. I now buy Lucas in 55 gal drums. Every time I fuel up I add the Lucas Fuel Treatment. Last year I figured you save my company or family $9,700.00, and kept me in the trucking industry with other outstanding products that I have tried. Thank you for making an outstanding product that protects my equipment and saves me money. Money not spent is earned.

Sincerely yours,

Steven George

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