Mercury 80W-90 Premium Gear Lube, 2.5 Gallon 858059K01

Mercury 80W-90 Premium Gear Lube, 2.5 Gallon 858059K01 is a genuine OEM gear lubricant formulated to protect lower unit gears and bearings in Mercury outboards below 75HP. Designed for demanding marine environments, this premium gear lube helps reduce friction, minimize wear, and provide dependable protection against corrosion for long gearcase life.

Compatible with the following:

• Mercury outboards below 75HP requiring 80W-90 gear lube

Specially formulated for marine gearcases, this 80W-90 lubricant contains advanced additives that help protect internal components under high loads and operating temperatures. Improved emulsifiers provide added protection should water enter the gear housing, helping reduce the risk of gear damage until service can be performed.

Regular lower unit oil changes are one of the most important maintenance services for any outboard. Replacing gear lube at the recommended intervals helps extend gearcase life, maintain smooth operation, and allows for early detection of water intrusion or excessive wear.

This 2.5-gallon container is ideal for servicing multiple engines or for marine service facilities that perform routine lower unit maintenance.

To Confirm Compatibility: Contact our team with your engine serial number at (727) 596-5929 before ordering.