Synthetic SAE 75W-90 M8 Marine Gear Oil

Lucas Oil Products, Inc.

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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Ted Hoefer uses Lucas Fuel Treatment 98 Suzuki Swift, 79hp/79cu 4cyl-5speed

For the first 40 thousand miles, I averaged EPA mpg of 39 to 43 not using UCL. Have used 2oz. of UCL every 6 to 8 gallon fill up since and have averaged 41 (winter) to 45 (summer) - 43mpg overall for the last 40 thousand miles (car now has 80 thousand on it). Have also gotten a high of 48+mpg on several long distance runs. My last car (96GEO Metro 70hp/79cu 4cyl-retired at 240+ thousand) also averaged 39 to 43 - (EPA rating) ran it its whole lifetime with NO UCL. WISH I had known about UCL than!!!!!!!!!!!

Ted Hoefer

Stanwood, Washington

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