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



  • #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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Joe Hoesch uses Lucas Fuel Treatment

My 2004 Mercury Grand Marquis is one of the most trouble-free cars I've ever owned, but the 4.6 V-8 is a notoriously loud running engine and at 30,000 miles, it developed a minor high speed miss. I tried a few bottles of Lucas Fuel Treatment with great results. Not only did I lose the high speed miss, the engine runs much quieter and gas mileage improved noticeably. I use a bottle with every fill-up. I buy it by the gallon and refill the 5.5 oz. bottles so the cost per treatment works out to be about $1.00 each.

My wife's 1998 Chevy Venture Van with 150,000 miles developed a leaky tranny. I installed a bottle of Lucas Transmission Treatment and the leak completely stopped in 2-3 weeks.

The tranny made a ringing noise when climbing hills from day one that the dealership told me was harmless and to ignore. Following the treatment, I noticed over a period of several months that the noise gradually decreased and eventually stopped.

The Venture also get a bottle of Lucas Fuel Treatment with every fill-up. The engine has always been trouble free so we were looking for better fuel economy. We saw a big difference in gas mpg, especially on the open road. The big van always did get about 26-27 mpg but our last trip was 32 mpg. Impressive?

One day, we might consider $4.00 a gallon of gas a "bargain" so do anything you can to boost your mpg. Thanks Lucas.

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