I have a 2000 focus with 86,500 on the car. I have used m1 and for must of the cars life. Would i cause the car to leak oil or any thing if I go to PP, or RP. And what oil is the best for a 5k oil change
Mobil 1, Pennzoil Platinum, or Royal Purple
Mobil 1, Pennzoil Platinum, or Royal Purple