Synthetic SAE 75W-90 M8 Marine Gear Oil

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Synthetic SAE 75W-90 M8 Marine Gear Oil

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


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For Sales enquiries Freephone: 0808 100 3259 or find your nearest retailer



  • #40652- 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 P. Lapsley uses Lucas Oil Conditioner

Dear Lucas Oil Products,

I am the second owner of a 1991 GMC short bed pickup truck with a 350-cubit inch V-8 engine. My stepfather, who was the original owner of the truck, and I have always used Lucas Oil Conditionerin conjunction with Castrol Oil. My stepfather, an ironworker, to travel to different areasaround the country to work, used the vehicle. Many of these miles were put on the vehicle while towing a camping trailer. I have now owned the vehicle for five years. Following the example set by my stepfather, I have continued to maintain it with Lucas Oil products. Currently, the vehicle has in excess of 460,000 miles on it. It has the original engine, has never had any internal engine worked performed on it, and doesn't smoke or use oil. Last year a local parts store employee tried to convince me that another company's oil conditioner was better than your product. I simply took him to the truck, started it up so that he could hear it run, and showed him the odometer. That ended that sales pitch! I've been so satisfied with your products that for the last five years, I have used them in all of my vehicles. I wanted you to be aware of the outstanding performance of your product.

Thank you for your outstanding products.

David P. Lapsley

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