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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David Kana uses Lucas fuel treatment in a 98 Honda Passport.

My wifes fuel gauge has been reading about a 1/4 to a 1/2 tank off on fill ups. So on a recent 1200 mile trip I packed the bottle, & after the third fill up the gauge was functioning like new. I will keep that in the mix! We had a 92 Jeep Cherokee that we used only as a winter car. When I brought it out of my back garage in the spring two years ago, it had a major leak out of the front trans seal. So I did a fluid & fliter change & added the Lucas Transmission additive. Started it up & to my amazement no leak at all. Also used it in the rear diff to stop an axle seal leak. Still no keaks two years later. My sister-in-law drives the car everyday!

I am sold on Lucas products!

David Kana

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