I'm wondering what people are using for TCase/Diff Oil these days. I've read around different forums and it sounds like everyone says OEM is really the only way to go (Diaqueen SAE90 GL-5), but I'm finding it hard to find the oil at a decent price.

 

I just recently looked into this, the last fluid change I did was my first and I just put the stock Mitsubishi fluid in but this time I was considering redline it motul but I'm starting to think it's not worth it tbh.

 

Yeah, it seems as though the Modul LSD 90 oil is the second most recommended oil to put in.

 

I've always used OEM in t-case and diff. his past fluid change was the first I went with royal purple for the transmission as it was readily available locally.

 

It would be interesting what your long term experience with this is.

 

I believe he has wandered out of the Evo9 forums. if you don't put diaqueen in the SST(or one of the very few suitable aftermarket options), You are going to have problems.

 

opps my bad. should of paid closer attention to which forum this was in.