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Discussion Starter #1
how many quarts does a 1984 el camino 10 bolt posi take?

can you use other brand of oil than ac delco?
 

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Deputy Director Region 6
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I used the 80w90 gear lube plus GM posi additive ! I think I bought 3 quarts of gear lube & 1 bottle of additive & I think It was just over 2 quarts to fill up ! Some posi units say do not use Synthetic
127148
 

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The trick to this job is to absolutely first make sure you can get the fill plug out BEFORE draining the differential.

Rick
 

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I think others will agree that have been there ,done that, use ONLY THE GM additive !! These rear ends only like the GM BRAND additive ,as shown in a couple of post back. But then ,you can use what you want and go back later and use the right one.
 
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