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Re: Rear Diff OIL WEIGHT 98 blazer
The Eaton G80 doesn't require additional limited slip additive, it will actually wear it out quicker. Royal purple and Redline NS fluild is good for this if you wanted to switch to synthetic. I think GM recommends 85w90 in the diffs. I'm using Royal Purple Maxgear 75w90 front and rear in my Z that has the G80..
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2000 Chevy Blazer ZR2
Performance Mods: Numerous
Suspension Mods: Some, but not enough
Exterior Mods: Just Right
1987 Buick Turbo T Dark Red
Low 11 sec sleeper 
.030 4.1 block, PT6262E, & other odds and ends....
My Cardomain
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