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12-19-2020, 04:44 PM
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#1 |
 Drives: 2018 camaro 2 ss Join Date: Feb 2018
Location: FL
Posts: 41
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Rear diff
I thought if you develop the dreaded groan in rear diff, they replace the gear oil with a special gear oil. Does anybody know what the number of the gear oil is?
THANKS |
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12-19-2020, 09:57 PM
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#2 |
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Long hauler
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Quick search shows TSB #17-NA-287
From my understanding, they use the factory defined fluid from the owners manual. So it's just a drain and refill I guess? Manual shows "Rear Differential Fluid 75W-90 Limited Slip (GM Part No. 88900401) Add Limited Slip Additive GM Part No. (88900330)"
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12-21-2020, 02:19 PM
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#3 |
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TEXIT
Drives: 2019 ZL1 M6 Join Date: Aug 2018
Location: Republic of Texas
Posts: 93
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Royal Purple Max Gear 75W-90 Synthetic Gear Oil is what I use and no groan.
 https://royalpurpledirect.com/max-ge...etic-gear-oil/ |
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12-21-2020, 08:46 PM
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#4 |
 
Drives: Duramax, 2018 Camaro SS 1LE Join Date: Nov 2020
Location: CONvid Commieforina.. soon to be in ID
Posts: 61
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I use Red Line GL-5 Gear Oil (57905) No noises here.
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