A reader asks: I have a Yamaha VF225 VMAX SHO outboard engine and need lower unit oil. Does AMSOIL’s Marine Gear Oil replace Yamalube Marine Gear Case Lube HD?
Our answer: Yes, AMSOIL 75W-90 Synthetic Marine Gear Oil is a direct replacement for Yamaha’s Yamalube Marine Gear Case Lube HD. In fact, we would contend that the AMSOIL product is a full-synthetic upgrade.
AMSOIL Synthetic Marine Gear Oil is formulated to withstand the high-output of Yamaha V-6 and V-8 outboard engines. It is also appropriate for Yamaha’s smaller outboard motors.
The AMSOIL Marine Gear Oil is 100% synthetic. However, the Yamaha HD Marine Gear Case Oil appears to be a conventional oil. Therefore, synthetic oil technology affords AMSOIL the ability to “tailor-make” this oil for maximum friction reduction.
The main requirement of any marine gear oil is wear protection. AMSOIL uses powerful extreme pressure (EP) additives to protect against heavy torque and shock-loading.
The AMSOIL Marine Gear Oil can tolerate up to 15% water contamination. This product fights foaming and cavitation all season long.
AMSOIL equips this synthetic marine gear oil with robust corrosion and rust inhibitors. Therefore, lower unit internal components are protected from water incursion and the effects of sea-water.
Where To Buy AMSOIL 75W-90 Synthetic Marine Gear Oil?
We can sell AMSOIL 75W-90 Synthetic Marine Gear Oil at wholesale prices in the US and Canada. Contact us for a wholesale price list using the form on this page. We can also offer world-class synthetic marine engine oil. See our Marine Products page for more details.