MERCURY High Performance Gear Lube 32 oz with Hand Pump — marine gear oil, corrosion-resistant protection

MERCURY High Performance Gear Lube is a genuine 32oz OEM marine gear oil with a hand pump, formulated to protect sterndrive and outboard lower units under heavy loads and wet conditions.

This factory-original 32-ounce bottle of MERCURY (Mercruiser) High Performance Gear Lube plus a convenient hand pump is designed for owners who demand a purpose-built lubricant for sterndrives and outboard lower units. Its specialized formulation reduces wear, resists corrosion, and is tested for marine environments where water intrusion, high speeds, and high horsepower place extra stress on gears. Use it to maintain performance and help preserve factory warranty coverage when specified by Mercury Marine.

How does this gear lube protect my lower unit during high-speed boating?

The formula contains extreme-pressure synthetic additives that reduce metal-to-metal contact and help the gear teeth slide smoothly even under heavy loads. It was evaluated in marine conditions to resist shear and maintain film strength at higher RPMs.

• Extreme-pressure synthetics reduce scoring and wear on gear faces
• Stable film strength at elevated temperatures and rpm
• Designed to resist breakdown during high-horsepower use

Will this work with my Mercruiser sterndrive or Mercury outboard?

This OEM product is intended for use in most Mercruiser sterndrive gear housings and in Mercury, Mariner, and Force outboard lower units. It’s formulated specifically for marine gear applications, so it’s the recommended choice when Mercury specifies High Performance Gear Lube.

• Compatible with most Mercruiser sterndrive housings
• Suitable for Mercury, Mariner, and Force outboards
• Do not mix with Mercury Premium Gear Lube — keep formulas separate

How does it defend against water intrusion and corrosion?

The additive package includes corrosion inhibitors and properties that help limit damage if water enters the gearcase. That protects bearings and gear surfaces from pitting and rust that can lead to premature failures.

• Corrosion-resistant additives reduce rust formation on internal parts
• Formulation helps prevent damage when water contaminates the gear oil
• Tested for prolonged protection in marine environments

What practical benefits does the included hand pump provide?

The hand pump makes filling or topping off a lower unit faster, cleaner, and more accurate than pouring from a bottle. It reduces spills and allows for easier servicing on a boat lift or trailer.

• Neater transfers into small fill ports without mess
• Improves control and helps ensure correct fill volume
• Convenient for on-boat maintenance or field servicing

Who this product is for: Boaters, mechanics, and fleet operators who run Mercruiser sterndrives or Mercury/Mariner/Force outboards and want a factory-specified lubricant tailored to marine conditions. If you operate high-speed or high-horsepower craft, perform routine lower unit maintenance, or need to meet Mercury warranty recommendations, this genuine MERCURY High Performance Gear Lube with hand pump is built to deliver reliable protection and easier servicing.