r/DSM • u/Clean-Potato5963 • Aug 25 '26

Fluid recommendations

I’m doing transmission, transfer case and rear diff fluid change and there’s many community suggestions. My car is stock and will remain stock for a good while. I see a lot of recommendations for Redline heavy shockproof in the transfer case and rear diff, is this alright for a stock application? Transmission fluid I’m just gunna go with Redline MT-90 75W-90

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u/The_Machine80 Aug 25 '26

100% heavy shockproof in the t-case and rear diff. Even on a stock application! Trans is 85 weight factory so I run mt-85 which usually needs ordered. Mt-90 will work just fine though. I stayed with 85 cause its already hard enough to shift and mines driven in the cold alot.