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Old 04-11-2004, 12:56 AM   #1
WB72
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Amount of oil in rear end.

Just a quick question, how much oil (approx) will it take to fill a 12 bolt diff with 3.73:1 posi in it?

I have the rear end out and I would like to fill it from the diff cover.
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Old 04-11-2004, 04:05 AM   #2
jku72
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I think its like 2 quarts, but thats a guess, I know I fill it till it gets to the plug hole, and it seems like it takes almost 2 of the tall skinny bottles that 90 weight comes in.
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Old 04-11-2004, 04:47 AM   #3
pritch
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Do yourself a favor and get one of those cheap thumb pumps for putting gearlube in outdrives on boats. There at wally world for 5 bucks. Much easier than squeezing those tall skinny quarts.
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Old 04-11-2004, 08:21 AM   #4
JimKshortstep4x4
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It sounds like you have the differential out and turned with the cover up. 3 1/2 pints will fill the rear end so that when you check it installed, the lube will be at the plug line where it should be.

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Old 04-12-2004, 12:19 AM   #5
Longhorn Man
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Don't forget the posi additive.
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