Yamalube Friction Modified Shaft Drive Gear Oil Plus
| Meets | GL-4 and GL-5 requirements |
|---|
- Anti-wear and anti-scoring additives; helps keep seals pliable.
- Approved where a manual specifies Mobilfluid 424 or Yamalube Friction Modified Shaft Drive Oil.
Yamalube · Virginia Beach
Yamalube for the lower unit: gearcase lube, gear oil, greases.
These are the Yamalube products Yamaha lists on its lower-unit maintenance page. The two gearcase lubes are split by engine: the standard GL-4 lube is excluded from Yamaha's largest outboards and the GL-5 HD lube is made for them. The page also carries a shaft drive gear oil, three greases and a precision parts cleaner.
Lower unit
7 products
as Yamaha lists them.
Part numbers, specs and features: Yamaha, read from yamahaoutboards.com/maintenance-matters/lower-unit-new on 2026-10-05. Yamaha updates its listings; we confirm the part number when we quote.
Yamalube Marine Gearcase Lube
| Grade | Marine GL-4 |
|---|
- Rust and corrosion inhibitors for sustained high-speed loads.
- Excluded: XTO Offshore, 4.2L/4.3L V6 Offshore, V6 V MAX SHO 200-250 and V8 F300-F350.
Yamalube Marine Gearcase Lube HD
| Grade | Marine GL-5 |
|---|
- Heavy-duty gearcase lube for 200-250, 4.2L Offshore and XTO.
- Yamaha does not recommend it for other Yamaha outboards.
Yamalube Molybdenum Disulfide Grease
- Extreme-pressure, water-resistant grease that guards against wear and galling.
Yamalube Polyurea Grease
| Grade | NLGI® #2 |
|---|---|
| Operating temperature | -10 and 325°F |
- Resists oxidation, rust and aging.
- Designed for high-temperature, high-speed bearings such as a primary sheave drive.
Yamalube Precision Parts Cleaner
- Fast-drying, residue-free cleaner for sensitive electrical and ignition parts.
Yamalube UltraMatic Grease
- Grease for ATV automatic clutches; replaces Grizzly Grease.
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