Rear Gear oil Recomendations (Finished 500mi break in)

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Old May 19th, 2018, 06:25 PM
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Rear Gear oil Recomendations (Finished 500mi break in)

Car has 3.42 rear (Yukon) with Posi (12 bolt "O" Aluminum LPW) and a Stage II 200-4R. Just finished off the 500 mile break in for the rear gear. What high quality oil do you guys recommend? I was looking at this combo. Thoughts?


1) https://www.ebay.com/itm/Sta-Lube-SL...19.m1438.l2649


2) https://www.ebay.com/itm/Genuine-GM-...19.m1438.l2649
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Old May 19th, 2018, 06:55 PM
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I have no idea what this is so I can't comment on which oil to use. "Aluminum LPW" is meaningless to me, and I know a bunch about O-Type rears.
Originally Posted by sammicurr86
Posi (12 bolt "O" Aluminum LPW)
More / detailed info as to which posi style it is would help determine which oil is appropriate.
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Old May 19th, 2018, 08:14 PM
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Originally Posted by Fun71
I have no idea what this is so I can't comment on which oil to use. "Aluminum LPW" is meaningless to me, and I know a bunch about O-Type rears.
More / detailed info as to which posi style it is would help determine which oil is appropriate.

Got the "Posi" from Supercars unlimited



http://www.supercarsunlimited.com/12...iers-i275.aspx


Item #: 46-148
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Old May 19th, 2018, 09:02 PM
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Aluminum LPW is a girdle cover. Any 80W90 or 85W140 non synthetic gear oil with friction modifier will work.
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Old May 20th, 2018, 08:52 AM
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Originally Posted by sammicurr86
Got the "Posi" from Supercars unlimited
OK, so a clutch style posi. What olds 307 and 403 posted is appropriate for that style posi.
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