I've tried changine the fluid, but no luck on mine. Both tires spin on the street, but when I'm at the track w/ slicks, only one does. And it is NOT consistant on which tire spins, sometimes it'll be the driver side, then other times it's the passenger....

 

Ok go ahead and rain on my parade I suspect your going to be right,but since I had no ID plate on the unit I don't qualify for the $105. exchange.
I'm going to the track thurs. if I'm not consistant I'll start looking for an Eaton.

 

just something to add, if you're running synthetic in there i'd get that out of there.

 

I was,but went with 80/90 weight lube this time. There was no visible damage to unit or R&P gears,no solid metal in case.