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90w the same as 80w-90?

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Old 02-04-2010, 08:50 PM
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90w the same as 80w-90?
the book says to use 90w in the diffs, however seems that no local dist. has 90w I was told 80w-90 is the same thing now a days.

is that true?
 
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Old 02-04-2010, 11:16 PM
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It's basically the same, a little less stiff in colder temps is all, 75w-90, 80w-90, straight 90w, any of the three will suffice.
 
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