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      07-12-2023, 11:20 PM   #11
rostrata
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Drives: '20 M340iX
Join Date: Mar 2021
Location: Las Cruces, NM

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Quote:
Originally Posted by Nembus View Post
Out of curiosity, does your car have the M sport diff? I did so much researching and my only options for diff fluid aside from OEM is to use Redline for the front and a Motul molygear 75W80 that's GL5 for the rear cause I have an m-sport diff.
Yes. I have the M-Sport diff. So our cars are identical in that respect. You CAN use the same GL-5 on the front. Those friction modifiers are simply added to allow the LSD to work properly. As I said before, you’ll have to make that choice for yourself if you want to deviate. But I couldn’t find a single piece of evidence that said it would be unwise to do so. I take that as a green light. But your car, your decision.
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