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94 Posts
ok heres the deal i changed my differential fluid today i jacked all four corners up i eye balled it and got the car as level as possible , i pumped out as much fluid as i could , then i added the bottle of GM LS additive , and began to pump my 80w90 differential fluid and i pumped it untill it began to spill out of the hole , then i put the screw cap back on and test drove it , i heard no chatter or whining or any noise , did i do the job exactly how its supposed to be done? or where could i have paid more attention to?