Mercury – Premium Gear Lube | 80W-90 Marine Lubricant | For Outboards & Sterndrives | 8 oz Tube | 802844K01

Overview

Your outboard’s gearcase takes the most punishment on the water — protect it with Mercury Marine 802844K01 Premium Gear Lube. Specially formulated for outboards up to 75HP, this 80W-90 gear lube delivers superior protection against corrosion, wear, and moisture damage. It’s made specifically for marine environments, with additives that keep gears coated and lubricated even when water enters the housing. Whether you’re doing a full gear oil change or topping off between trips, this OEM gear lube keeps your drive system running quietly and efficiently.

Key Features

• Purpose: Lubricates and protects lower-unit gears in outboards and sterndrives.
• Viscosity: 80W-90 premium marine-grade formulation for smooth operation.
• Performance: Fights wear, corrosion, and foaming in high-pressure gear systems.
• Durability: Contains special emulsifiers to maintain protection even with water intrusion.
• Ease of Use: Packaged in an 8 oz tube for clean, simple application.

Engine & Equipment Compatibility

• Designed for Mercury and Mariner outboards below 75HP
• Safe for use in small outboards, lower units, and gearcases

Performance & Real-World Benefits

The 802844K01 gear lube helps your engine run smoother and quieter by maintaining a strong protective film on every gear and bearing. Its specialized formula resists breakdown under heavy loads and high temperatures, preventing metal-to-metal contact and gear wear.

Even if a little water gets into the housing, the emulsifiers keep the oil stable so protection never drops. It’s a simple way to extend the life of your gearcase and keep your outboard performing like new.

Why Choose Mercury OEM

The Quicksilver 802844K01 is the same gear lube Mercury uses in its factory service operations. Generic oils might meet standard specs but aren’t designed for the harsh marine conditions your motor faces.

Mercury’s OEM gear lube has been tested under real-world stress — high RPMs, saltwater exposure, and storage cycles — to ensure maximum gear and bearing protection. When you use Mercury Premium Gear Lube, you’re getting proven performance that keeps your investment safe.

FAQ

Q1: What engines is this gear lube for?
It’s made for Mercury and Mariner outboards under 75HP, including 2-stroke and 4-stroke models.

Q2: What weight is the oil?
It’s 80W-90, formulated specifically for marine gear applications.

Q3: What makes it different from automotive gear oil?
It contains emulsifiers and corrosion inhibitors that protect gears even when water is present.

Q4: What size is the tube?
An 8-ounce tube, ideal for smaller gearcase fills or topping off.

Q5: Why use Mercury OEM oil?
Because OEM gear lube is tested for real marine use — protecting your drive where standard oils can’t.