Quote:
Originally Posted by Crankster
One thing to keep in mind when reading lubricant specifications, Gear Oil numbers are different than SAE Oil numbers for equivalents, and I think the old 600W, SAE 50, and 90W Gear Oil are all pretty close in terms of viscosity.
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600W is more in line with 180-240W. 140 and 250 work fine as stated. 90 is to light. This is discussed very often here.