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Old 06-16-2008, 12:40 PM
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Pablo Pablo is offline
Master Bike Builder & Forum Sponsor
Join Date: Dec 2007
Location: Duvall, WA PNW
Posts: 3,649
Default Re: Grubee Gearbox- run it with lube!

Thanks- good info. What brand would you suggest?
I went and searched - basically the ones with enough AW agents, aren't high enough viscosity to help much. None of them have EP (extreme pressure) additives for real gear protection.

The "instructions" with the gearbox state that it can be used wet or dry. They also say that if you want to run it wet, use engine oil. Several people have tried it and it has not worked for them.
What problems did they have with motor oil?

After looking at the gear box I think something like this would work:

AMSOIL - Severe GearĀ® Synthetic Off-Road and Drag Racing Gear Lubricant SAE 250 (SRT)
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