Quicksilver SAE 90 High Performance Gear Lube with Hand Pump — 32 fl. oz., Mercury OEM Spec, Corrosion Protection

Quicksilver SAE 90 High Performance Gear Lube and hand pump is a 32 fl. oz. kit designed to protect outboard lower units and Mercruiser sterndrives by resisting wear, corrosion, and water-related damage.

Maintaining clean, properly specified gear oil is vital for smooth, long-lasting lower unit performance. This Quicksilver kit pairs a 32 fl. oz. bottle of SAE 90 high-performance gear lube with a manual pump sized to thread into most outboard and sterndrive drain/fill ports. Formulated with extreme-pressure synthetic additives and manufactured to meet Mercury Marine OEM specifications, the lubricant is engineered to reduce metal-to-metal contact, help limit corrosion, and offer protection in environments where water intrusion is a risk.

How does this gear lube protect my lower unit gears?

The formula contains extreme-pressure synthetic additives that maintain a protective film under heavy loads, reducing friction and metal wear. Corrosion inhibitors help shield internal surfaces from rust when exposed to moisture or saltwater conditions.

• SAE 90 viscosity for stable film strength under load
• Extreme-pressure additives to prevent gear scuffing
• Corrosion inhibitors to fight rust and pitting
• Tested to meet Mercury Marine OEM standards

Will this kit work with my outboard or Mercruiser sterndrive?

The kit is intended for lower units on outboards and sterndrives, especially models above 75 hp. The included hand pump fits drain/fill screws with a 3/8-16 thread, making fluid changes cleaner and easier for most compatible gear housings.

• Compatible with Mercury outboards and Mercruiser sterndrives
• Pump thread: 3/8-16 for common drain/fill ports
• Recommended for applications above 75 hp
• 32 fl. oz. volume suitable for many lower unit fills or top-ups

How do I perform a gear oil change with this kit?

Use the hand pump to extract old gear oil through the drain port, then pump in fresh Quicksilver SAE 90 until the fill port indicates a full housing. Always dispose of used lubricant according to local regulations and follow the manufacturer's torque and service intervals.

• Pump removes and dispenses oil to minimize spills
• Follow service manual for proper fill level and venting
• Inspect seals and drain/fill screw threads before use
• Keep spare bottle for scheduled maintenance or emergencies

What distinguishes Quicksilver gear lube from aftermarket options?

Quicksilver develops lubricants specifically for marine applications and tests them under demanding conditions. This product is produced to align with Mercury Marine original equipment specifications, offering compatibility and engineered protection that many generic alternatives may not provide.

• Formulated and tested for marine lower units and sterndrives
• Meets or exceeds Mercury Marine OEM criteria
• Designed to resist water-related failures and wear
• Supported by a brand with over six decades in marine parts

Who is this for: Boaters, marine technicians, and owners of Mercury outboards or Mercruiser sterndrives seeking a factory-aligned gear lubricant and convenient pump for routine maintenance. It’s especially suited for vessels above 75 hp or anyone who wants a reliable, OEM-spec oil to reduce gear wear, protect against corrosion, and simplify lower-unit servicing.