Extreme Duty Marine SAE 20W-50 Engine Oil

Lucas Oil Products, Inc.

Extreme Duty Marine SAE 20W-50 Engine Oil

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 sever 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 engines
  • Protects against rust and moisture during long periods of storage
  • Safely blends and is compatible with synthetic and non-synthetic oils
  • Dropping point 540 lbs
  • Provides rust and corrosion protection in both fresh water and salt water environments
  • Effective Water Resistance
  • Long Lasting
  • Resist Extreme Pressure
  • Extreme Friction Reducer



  • #10653 - 1 Quart (Case of 6) - 946 mL



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

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Pat Quinn uses Lucas Transmission Fix for 1997 Lumina

I have a 1997 Lumina with a 3.1 engine, 4 speed automatic with approx. 400,000 km on it. I used your Fuel Injector Cleaner and it caused a large increase in my gas mileage after the second bottle. My mileage low is 13.5 mpg to a high of 27 mpg, this must have included highway driving. Average gas, 18-20 mpg. 1997 Canada fuel consumption guide for new car buyers call for 20 mpg city and 38 mpg on the highway.

My car engine service light came on and it was diagnosed as overdrive slipping. I took it to two transmission dealers for road tests and they said it would have to be replaced. It would buck at 85 km on the highway. I put in your Transmission Fix after about 12 day the engine light went out and the tranny was operating better. THIS WAS 55,000 KMÂ’S AGO!

All the products you sent and I tested, have improved the operating performance of the car.

I gave a sample of the Fuel Injector Cleaner to a 1999 Ford Crown Victoria owner, and his operating cost decreased. He was $1.00 to a $1.50 in fuel costs instead of $2.00 per $10.00 of income.

Pat Quinn


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