Mercury – Quicksilver 80W-90 Motorcycle Hypoid Gear Oil | Gear & Transmission Protection | High-Strength Hypoid Formula | 8M0128380

Overview

There’s something almost meditative about a bike that shifts cleanly and pulls with steady confidence. No grinding, no hesitation — just smooth engagement as the gears do their work beneath you. For riders with shaft-driven motorcycles or machines with separate clutch and transmission systems, the right gear oil can make all the difference. Quicksilver 80W-90 Motorcycle Hypoid Gear Oil gives you that reassuring feeling every time you roll out of the driveway, knowing the gears inside are protected, cooled, and ready for whatever the road, trail, or highway throws at you.

Key Features

• Designed for shaft drive and separate clutch/transmission applications
• Formulated to provide strong protection against wear, corrosion, and oxidation
• Meets or exceeds API GL-5 / MT-1 and SAE J236 specifications
• Maintains performance and reliability under high load and extreme pressure
• Packaged in a one-quart bottle for easy handling and clean filling

Engine & Compatibility

• Suitable for motorcycles with shaft drive systems
• Compatible with machines using separate clutch and transmission assemblies
• Works well for touring bikes, adventure motorcycles, dual-sport models, and larger displacement engines
• Approved for use without affecting factory warranties

Performance & Practical Benefits

When gear oil performs well, you feel it immediately — the bike shifts smoother, the drivetrain feels more connected, and everything runs with a more controlled, almost quiet confidence. Quicksilver’s 80W-90 hypoid formula is built for the intense pressure and shearing forces inside a motorcycle gearbox. Instead of thinning out or foaming under load, it stays dense and stable, keeping metal surfaces cushioned and cool.

The corrosion protection is equally important. Bikes that sit for long stretches, especially in humid environments, can develop internal rust if the oil doesn’t guard against moisture. This Mercury Marine part creates a protective film that holds up over time, giving your gears a fighting chance even after long off-seasons. Riders also appreciate how it reduces oxidation — the slow breakdown that causes oil to thicken, darken, and lose effectiveness. Whether you’re carving through mountain turns or grinding through a long commute, the drivetrain stays protected, steady, and responsive.

Why Buy OEM

There are plenty of gear oils out there, but hypoid systems demand something built to exacting standards. Mercury and Quicksilver know high-load lubrication better than most, having built products for marine gearcases that endure extreme torque and harsh environments. That legacy carries over into their motorcycle gear oils. This part number delivers consistent viscosity, strong pressure resistance, and reliable long-term performance — qualities that generic aftermarket blends often struggle to maintain. When you choose OEM-backed gear oil, you’re choosing reliability, peace of mind, and fewer expensive surprises down the road.

FAQ

Q1: Which systems does the Quicksilver 80W-90 Motorcycle Hypoid Gear Oil fit?

It’s designed for shaft drive motorcycles and models with separate clutch and transmission systems.

Q2: What makes this oil different from aftermarket options?

It meets strict API and SAE standards and offers superior protection against wear, oxidation, and corrosion, maintaining stability under high pressure.

Q3: How do I know if this is the right oil for my bike?

Check your owner’s manual. If your motorcycle calls for 80W-90 hypoid gear oil, this Mercury Marine part number is a dependable match.

Q4: Can it be used in hot and cold riding environments?

Yes. Its formulation remains stable in temperature swings, ensuring reliable protection year-round.

Q5: Is installation straightforward?

Absolutely. Changing gear oil is one of the simpler maintenance tasks, and the quart bottle makes filling clean and easy.