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What is the weight of Cat chain case oil? Was wondering if I can used 80-90w gear oil. I have reverse so I believe it takes a little more oil. Thanks redf-7
 

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Use synthetic or regular automatic transmission fluid if you don't want to buy the Cat stuff. Polaris makes the best gear lube.

80/90w gear lube is too thick for a snowmobile. The chain case doesn't create that much heat. Your not actually meshing heavy gears with a high side load like the axle of a car, it is chain to gear. Transmission and transfer cases survive everyday with ATF.
 
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