Quote:
Originally Posted by MGM135is
I did this to my Mustang and it was a very worthwhile upgrade. I would drive lightly/like a normal person the first few hundred miles and then replace the fluid to get any metal shavings out from break in. Then let it rip.
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That's exactly what I did. Since I had to drop the diff because it leaked, I had to drain my fresh Redline 75w90 (
) and fill it up again. After driving probably about 100 miles on brand new fluid, it went from gold colored to black. I've done it again, but the fluid is still goldish. Have put about 500 miles on this swap so far and no issues! I only put cheap Valvoline 75w90 in there for now, gonna swap in some Redline juice whenever its convenient then I'll officially consider the task done.