Extreme Duty Marine Semi Synthetic 20W-50 Engine Oil

Lucas Oil Products, Inc.

Extreme Duty Marine Engine Oil Semi Synthetic SAE 20W-50

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

Lucas Extreme Duty Marine Semi Synthetic 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 Semi Synthetic 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


  • #10654 - 1 Quart (Case of 6) - 13 lbs
  • #10811 - 5 Quart (Case of 3) - 31 lbs
  • #10667 - 5 Gallon Pail (1 Pail) - 40 lbs
  • #10668 - 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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Dallas uses Lucas Fuel Treatment for 1996 EF2 Ford Falcon

Hi there,

I live in Brisbane Qld Australia and I have a 1996 EF2 Ford Falcon Inline 6. I have been using your oil stabilizer and fuel treatment for the past year & will never go back to oil alone!!! I am one of those people that when I buy something I only buy the best & if I'm not happy with it I just don't buy it again. I was told by I guy at work to use your products because I was having trouble getting 5000kms out of my oil and the car was lacking power. As soon as I used your products I was amazed!!! Really!!! Oil was staying cleaner, more power and alot quieter motor was achieved. At the moment I am using Penrite oil with your stabilizer and getting alot more kms and a cleaner motor, I always use Penrite or Pennzoil oil now, have gone off Castrol and Shell oil's because of there sludge build up. Again thanks so much for products that work as well as they do and "keep it up".

Yours truly,


Brisbane Qld Australia

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