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#1
02-09-2019, 10:23 PM
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Red rear end lube tag "limited Slip"
Just picked up this NOS piece, my question is when did GM change the wording from Posi to Limited slip? Also the hole size on this one is 13/16th.
Thanks 
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#3
03-29-2019, 02:24 AM
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I believe this is when GM used the different variations of the red plastic tag.
66-69 = USE POSITRACTION DIFF LUBRICANT ONLY 70 on up = USE LIMITED SLIP DIFF LUBRICANT ONLY.
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