Mines been doing it for almost 2 years now. Only does it when the diff gets warm. I have changed the fliud twice and added 2 bottles of additive the first time, still did it after 6 months so I changed it again and added one bottle of additive and one bottle of Lucas, same thing. But for me it only does it about 2-3 times a year the rest of the time I dont travel long enough to get the diff hot. Im thinking of a new limited slip, just havnt pulled the trigger
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