Rear Diff Problems
10-21-2005, 09:23 AM
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Rear Diff Problems A few days ago I changes out my rear diff fluid in my 12 bolt with Royal Purple 75w90 with differential additive. My first pass at the track last night car hooked good but the second launch my passanger rear didn't spin, I pedaled it and got back on the gas and it headed towards the right wall again. On the return road and on the way home both tires would leave 2 soild black marks. The only thing I changed was the fluid. I've never had this problem over the last 120 1/4 passes. Can I just add some friction modifier or do I need to drain all the fluid and replace with sometime else. If so what do you suggest?
