Quote:
Originally Posted by Riverside racer
I have always broken in my lsd diffs using mineral oil 90w and after a 1000 miles drained and refilled with the same but plus friction modifier. Never had an issue. |
Ever since the early 60's most Owner's Manuals, if you flip to the back and read the recommended service intervals, have a "fill for life" no service required for non-limited slip rears, but for LSDs they recommend one single change out at the 7,500 mile mark along with the additive. If we go wayyyyyy back to 1963 and Jaguar's Powr-Lok (which a lot of have in our Cobras), you'll find this little gem:
