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Old 08-15-2023, 07:46 PM   #14
Mountain

 
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Drives: 2017 SS 1LE, 2016 1SS (previous)
Join Date: Apr 2016
Location: Metro-Detroit
Posts: 1,871
Quote:
Originally Posted by m6-lt1 View Post
Drain again and ONLY use the ac delcon GM stuff.
Please explain why.

Quote:
Originally Posted by ctrlz View Post
Without knowing the exact Valvoline product and the friction modifiers present, it is hard to know if what you used is compatible.
it is the friction modifiers which allow the plates to slip smoothy while turning.

So, yep, sticking with AC Delco probably safest.
The eLSD does not have it's clutches within the main gear housing of the rear end. The clutches are in a separate fluid, in a separate housing.

Ive used Mobil 1 and Valvoline (most often due to it's slightly better VI) for 30k miles in my 1LE and it's seen many drain/fills and hard track use. I guess it's a ticking time bomb.

It's easy to blame the gear oil here, as that's the only one (1) thing mentioned, but no one here has heard the OP's actual noise or put eyes on the vehicle, yet you all are jumping to a definite conclusion.
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