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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Nicholas Denson uses Lucas Heavy Duty Oil Stabilizer We've used it in all of our vehicles.

I've owned a lot of different vehicle over the years. I also put on a ton of miles over terrain that is far from ideal. I've used a varying assortment of Lucas products in all of them with great results. My current truck is a 2006 Isuzu Cab Forward, and I've already started using Lucas at the first oil change. The reason, the cars/trucks I've already owned:

1. 1975 and 1977 Chevy Corvette (V8)- 150,000 and 200,000 miles respectively and still both are purring like kittens. I've since sold both, but know the owners and keep in touch. They still use Lucas additives.

2 1989 Honda Accord (IL4)- 345,000 and now on its third owner now, still running great.

3. 1980 Chevy S-10 Blazer (V6) - 255,000 and still running great when the frame rusted out.

4. 1985 Ford Ranger Pick-up 4x4 (V6)- 330,000 miles and still running with a new owner.

5 1985 Ford F-250 Dually, Diesel (6.9L V8)- I bought it with 350,000 miles on it (original engine 6.9L), I put anouther 300,000 on it, and now I've given it to my father for hauling a boat trailer.

6. 2006 Isuzu NPR (5.2L 4cyl Turbo diesel), 14,000 miles on it, and alreay using the additives. They told me at the dealer these trucks routinely go a million miles, I'm aiming for 2 million.

I all the vehicle that I've ever used Lucas additives, the only reason that any of them every saw a junk yard was either for frame damage, or sheet metal damage. I've never blown an engine, dropped a tranny, or had any problems other than routine stuff like the original fuel pump letting go at 600,000 miles.

Like I said, we put a lot of miles on for work, and I've kept my business running (pardon the pun) like a well oil machine, because I've never had to worry about being down for engine or transmission work. I highly recommend these products and will continue to use them as long as I have a vehicle.

We learned about Lucas at an automotive convention where a rep showed us a demonstration. We didn't believe it would work, or that it'd be worth the money, boy were we wrong. Keep up the great work.

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