Synthetic SAE 75W-90 M8 Marine Gear Oil

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Marine Gear Oil Synthetic SAE 75W-90 M8

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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


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

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RAGMAN uses Lucas Fuel Treatment in 1990 olds cutlass supreme

I just bought this 1990 Olds Cutlass Supreme with a 3.1L v6 engine. The car has 52,000 original miles and is unmolested. When I went for the RI Emissions Test, the car achieved 2.30 gpm, failing by .05 gpm hydrocarbons. The limit is 2.25 gpm. I purchased a 5.25 oz. bottle of Lucas Fuel Treatment and added half of it to about 10 gallons of gas. A week later after driving 180 miles , I went for a retest. The hydrocarbons dropped significantly to 1.93 gpm, passing the test. As they say, THIS STUFF WORKS!!! As of now, I haven't had the car long enough to provide any mileage data.

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