5k Oil change interval..too long for turbo type?
Regarding synthetic oil, a consensus is clearly, and that is that an excellent synthentic like Mobil 1 is the way to go, both to protect the engine and for a modest increase in hp.
I'm waiting till 5000 for the oil change, but will have them put in Mobil 1. I'll be paying the difference, of course, between the cost of convential and synthetic oil.



