Originally Posted By: lars11
No, exactly like this: Mobilube SHC fully synthetic sae 75w90. Don't think that's LS. The drive has a cone clutch, you don't want that to slip=heat.
Lars, you are correct that the manual recommends Mobil 1 SHC 75w90 and not Mobil 1 LS 75w90. I did not read this thread well enough to notice that the debate was over LS or SHC, just whether M1 gear lube was recommended. Either way, I'm not sure if the LS would cause any issues - simply because I don't think they put very much FM in the LS fluid over the SHC fluid. In my experience, no LS diff is happy with the Mobil 1 LS fluid, which leads me to believe there isn't enough FM in there to bother with the clutches in the SX, but that's speculation and no more.