I've had one in my trann fo ra LOOONG time (back when bill's isuzuperformance was the only place that you could get them). it isn't like a regular viscous slip dif. it has screw gears inside of it. it acts just like a regular old open dif.....until you start putting some power to it (i.e. taking off). I rember when I drove my car to miami a year and a half ago right before that year's christmas...I stopped off in jacksonville. I was at a light in light rain (the really slick road stuff) and I wanted to see exactly how the diff woudl act with average slip conditions (where you slip it just enough to usu. bust 1 tire loose). it was wierd. one tire would spin, then the other, then the other ....it was like power was being shifted left to right to left as traction changed. that' swhat it should do. it helps keep control. I think you will have absolutely no problems with yours. as a matter of fact, I know you will becuase you never have to worry about "your diff wearing out". there are NO viscous plates in the thing at all. just gears. pretty neat little thing.........just a major PITA to put that tranny back together.

bring it on...........