Extreme Duty Marine Semi Synthetic 20W-50 Engine Oil

Lucas Oil Products, Inc.

Extreme Duty Marine Semi Synthetic 20W-50 Engine Oil

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 sever 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) - 946 mL



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

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Kevin Dingman uses Lucas Transmission Fix in 1990 Nissan Maxima 3.0 Auto

HAHA I cant believe this...Im living in St.Louis and im moving to Mass next week, Ive been so worried about the tranny being able to make the drive...The tranny has been going down hill fast, slipping real bad and slamming into gears. So I heard about Lucas from working at advanced auto parts so I figured I had nothing to lose,I through in the tranny fix goo (after draining some fluid out) shut the hood and put it in gear...I went down the road and couldnt believe it the car feels brand new ...Thank you so much lucas I will live by your products now..

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