Got the FTBR kit going in this week. Noticed a little spot on the garage floor right below where the diff would have been. Figured it was the rear cover and maybe a bolt or two needed to be snugged up. Already have the beefier Ford Racing piece on her so I thought it’d be simple. Turns out it was coming from the input side. As they say, it’s not a leak; it’s just the horsepower sweating. Lol
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are you installing the bushing kit yourself? might as well do the pinion seal while you have it apart, even though it is a pretty easy job with it still in the car