Mercury - W High Performance Gear Lube SAE90 - Quart - 8M0222065

Overview

Keeping clean, high-quality gear oil in your lower unit isn’t optional—it’s what stands between smooth operation and expensive internal damage. Quicksilver SAE 90 High Performance Gear Oil is built for real marine conditions, where water intrusion, heat, and heavy loads can quickly break down lesser oils.

Formulated specifically for outboard lower units and sterndrives above 75 HP, this gear oil provides strong film strength and corrosion protection to help extend gear life and maintain reliable performance over time. It’s engineered to hold up under pressure—literally—so your gears stay protected whether you’re cruising or pushing hard.

Key Features

• Lower Unit Protection: Helps reduce friction and wear on gears and internal components for longer service life
  
• Water Intrusion Defense: Formulated to help prevent gear failure caused by water contamination
  
• Extreme Pressure Additives: Protects against metal-to-metal contact under heavy loads and high torque
  
• Corrosion Resistance: Helps guard internal components from rust and marine exposure
  
• SAE 90 Viscosity: Maintains proper lubrication across a wide range of operating conditions
  
• High HP Applications: Designed for outboard and sterndrive systems above 75 HP
  
• OEM-Level Quality: Backed by Quicksilver’s long-standing reputation for marine reliability

Performance & Practical Benefits

On the water, gear oil takes a beating—heat, pressure, and moisture all working against it. This formula is built to stay stable under those conditions, maintaining a strong protective film on gears even when loads increase.

If you’ve ever drained milky gear lube after a season, you know how quickly water can compromise protection. This oil is specifically engineered to handle that risk better, helping reduce the chances of premature wear or costly lower unit repairs.

FAQs

Q. Is this gear oil only for Mercury engines?
A. No. While it’s designed to meet Mercury and Quicksilver standards, it’s suitable for many outboard and sterndrive applications above 75 HP across various brands.

Q. Can this help prevent water damage in my lower unit?
A. Yes. It’s specifically formulated to help protect gears from damage caused by water intrusion, which is a common issue in marine lower units.

Q. What viscosity is this oil?
A. This is an SAE 90 gear oil, ideal for maintaining proper lubrication in high-load marine gearcases.

Q. When should I change my lower unit gear oil?
A. Typically at least once per season or every 100 hours, but more frequently if you suspect water intrusion or operate in harsh conditions.