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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Lucas Oil Power Steering Stop Leak Saved Barclay's Vacation

Lucas Oil, your Power Steering Stop Leak product saved my vacation.  I was in Big Bend National Park in the desert of west Texas when I noticed a power steering leak.  I was able to find a gas station that sold power steering fluid, so I bought a bottle of fluid and refilled my resevoir.  By the time I got to my cabin for the night, my power steering resevoir was dry.  Fearing the worst, I was able to  locate a grocery store where I found your product.  I was skeptical that it would work, but i filled up and was able to continue with the rest of my vacation without the worry of having to have my car repaired.  After a 975 mile trip back home, still no leaks. 

Thank you Lucas Oil.
Barclay C Nix

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