YAMAHA Yamalube Lower Unit Gearcase Lube — 2 Quart OEM Marine Oil, Rust & Corrosion Protection

Yamalube ACC-GEARL-UB-QT is Yamaha’s original OEM lower unit gearcase lubricant supplied in a two‑quart package for marine outboards up to 250 HP (except Yamaha 4.2L V6).

This genuine Yamaha formulation is engineered to protect lower unit gears, bearings and seals from wear, salt and freshwater corrosion during prolonged high‑speed operation. Packaged as two quarts with an X‑FINDER sticker, the gearcase lube matches Yamaha specifications so you maintain factory-recommended performance and service intervals. Use it when topping off or replacing lubricant in compatible Yamaha outboard lower units to help ensure smooth shifting and longer component life.

What makes this Yamalube gearcase lube suitable for marine lower units?

The formulation contains additives and robust rust/corrosion inhibitors tailored for the severe environments lower units face. It’s blended to resist water intrusion and shear while lubricating gears and bearings under load. Because it’s an OEM product, compatibility and fluid characteristics mirror Yamaha’s guidance for proper operation.

• Factory-formulated to Yamaha specifications for lower unit gearcases
• Rust and corrosion inhibitors for salt and fresh water use
• Resists shear and maintains protective film at high speeds
• Sold as a two‑quart set with X‑FINDER sticker for service tracking

Which outboards can use this Yamalube product?

This gearcase lube is intended for Yamaha outboards rated 250 HP or less, excluding the 4.2L V6 models. It’s ideal for standard midrange and lightweight Yamaha outboards where the manufacturer specifies OEM lower unit lubricant. Check your owner’s manual to confirm compatibility before applying.

• Compatible with Yamaha outboards up to 250 HP (not for 4.2L V6)
• Suitable for both saltwater and freshwater engines
• Use for routine service, top‑offs, or full lubricant changes
• OEM match reduces risk of cross‑compatibility issues

How do I use and store the two‑quart Yamalube lower unit lube?

Drain the old lower unit fluid per your Yamaha service manual, then refill to the specified level with fresh Yamalube gearcase lube. Keep the container sealed and stored upright in a cool, dry place away from direct sunlight. Dispose of used oil and contaminated materials according to local regulations.

• Follow Yamaha service manual for drain and fill procedure
• Use proper funnel or pump to avoid spills and contamination
• Store sealed container upright in cool, dry conditions
• Recycle or discard used fluid responsibly per local rules

Why choose Yamaha OEM Yamalube instead of generic gear oils?

OEM fluids are formulated to meet the manufacturer’s performance criteria and chemical tolerances, reducing the risk of incompatibility with seals, coatings or gear materials. Yamalube’s additives and inhibitor package are optimized for Yamaha lower unit designs so you preserve shifting feel and corrosion protection over time.

• Exact formulation match to Yamaha recommendations
• Lower risk of seal swelling or premature wear from wrong additives
• Helps maintain factory performance and service intervals
• Comes with an X‑FINDER sticker for maintenance records

Who is this for? Boaters who own Yamaha outboards up to 250 HP (excluding the 4.2L V6) and want the confidence of using factory-specified lower unit lubricant. It’s aimed at DIY maintenance enthusiasts, marine technicians, and fleet operators seeking reliable corrosion protection and gearcase performance in both salt and freshwater environments.