Synthetic SAE 75W-90 M8 Marine Gear Oil

Marine Gear Oil Synthetic SAE 75W-90 M8

Lucas M8 Synthetic SAE 75W-90 Marine Gear Oil is a pure synthetic, non foaming, super slick, long lasting lubricant designed especially for marine applications. Originally designed for high powered off shore racing boats, M8 Marine Gear Oil contains seal conditioners and an exclusive blend of synthetic additives that protect from rust and wear caused by both fresh water and salt water during long periods of storage.

Excellent for use in any heavy duty / high performance stern drives, v-drives, gear boxes, wheel bearings and superchargers.

Key Benefits

  • Fortified with anti-foaming agents to prevent cavitation at high RPM's
  • Safely blends with all other known gear oils and additives
  • Protects against rust and moisture during long periods of storage
  • Provides rust and corrosion protection in both fresh water and salt water environments
  • Effective Water Resistance
  • Long Lasting
  • Resist Extreme Pressure
  • Extreme Friction Reducer


  • #10652 - 1 Quart (Case of 12) - 25 lbs
  • #10664 - 5 Gallon Pail (1 Pail) - 40 lbs
  • #10818 - 55 Gallon Drum - 440 lbs


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

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Connell Miller uses Lucas Heavy Duty Oil Stabilizer in 1988 Ford van

Several months ago I bought an '88 Ford custom van that supposedly had a new engine with only 46,000 miles on it. Within a short period I was having to add one or two quarts of oil per week (even without a lot of miles being driven) and was suffering from badly fouled plugs.

My faithful mechanic for the last ten years, after changing the plugs, told me to use the Lucas Heavy Duty Oil Stabilizer. I'd never really had a belief in oil additive-type products, thinking they were all probably more hype than substance. But after just a few days and I was down again, I bought a bottle.

Since I was two quarts low, I put in the full 32 oz. And guess what - that was 3 1/2 months ago! My oil pressure has gone up, no more missing from fouled plugs, and I just now have added about a quart of the Oil Stabilizer to bring it up to full!

Gentlemen, I am sold! Thanks for making a product that makes good on its advertised promises!

Connell Miller

Fayetteville Arkansas

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