i just brought a 08 impala ls with 34k miles.car is spotless.the dealer changed all the oils
i dont know if the tranny oil was changed it looks clean.im going to have it changed soon.my quest is woud it be safe to use lukes tranny additive.also can i add a quart of marvel oil when i change the moter oil
I wouldn't touch the trans fluid if it were me. That fluid is barely broken in at 34k. On an '08, I am pretty sure GM recommends 100k for trans fluid. I would definitely at least wait until 75k. Save the money. What motor does it have? I am guessing the 3.5?