hi all, I have a used 07 m37x I noticed when I put the car in reverse it moves but its slow and engine revs seems to almost be slipping the gear does that in drive sometimes. hmm I've been putting regular in the car it said premium recommended. It did not say must use premium do u think that might be the issue or could it be trans issue? did not have this problem when I bought it. I just filled it up with mid-grade what do you guys think?
