Originally Posted by amphi
How much needs to go into the differential? exactly one quart? or one quart plus 2.5oz of friction modifier. I don't understand the manual very well. Seems they want you to add 2.5oz to the specified capacity, but would it then overfill? Thanks.
Just the 1 qt. total. You can't overfill it as it will just run out the fill hole. If you use Royal Purple, it already has the friction modifier in it. If you use something else, I suggest putting the friction modifier in first (since it comes in a very small container) then adding your Diff oil last.
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