Lucas Oil 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. 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