Extreme Duty Marine Semi Synthetic 20W-50 Engine Oil

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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

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* Size:


  • #10654 - 1 Quart (Case of 6) - 12 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

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Greg Bosley uses Lucas Fuel Treatment in 2004 Ford Excursion 6.0 Power Stroke

I have listen about the Lucas Product on XM Open Road and finaly i went too Mid American Truck show stop by your display talk to a rep I pick up 2 5 oz containers to try , I have never added anything to my vehicles but I thought i give it a try , what a difference in my truck it is smoother running and seems to have better pick up on taking off from a light , I am spreading the word to my freinds that for sure ,Also I like to Thank Lucas for a quick response on a E mail on my way back from Ky to Maryland that additive started too work and carbon started to come out of exhaust just a little puff of black smoke from my power stroke .I had a concern so i sent a e and my question was answer within the hour ,So many sites you go too ask a question you never ever hear anything from them so Not only does your additive make a difference but you have great customer service Thank You Greg

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