about to change out the 3.55s to 3.90s along with all the seals, bearings, etc. i have got 2 quarts of royal purple max gear and 1 bottle of friction modifer. is 2 enough or do i need to order another bottle?
Yeah, you only need on bottle of FM. You probably won't get all 2.75 qts in there. They usually only take a couple squirts from the third bottle before it's full