Excavator final drive lub

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Feb 22, 2005
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Montana
Kubota recommends 80w-90 in final drives. Is there any reason not to use synthetic gear lub in these drives? Drives are costly and would like to make them last longer.Thanks
 
The gear lube in final drives is often condemned due to moisture contamination, and in that case the base stock of the gear lube makes no difference.

Final drives are slow moving, low/moderate temperature, and can have significant loads. My preference for those conditions is a sticky, moly-fortified gear lube.
 
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