I need some more advice on the 96 Mystique, 5 sp./V6 I just purchased. The vehicle has 42,000 miles on it and is in excellent condition. It has been given tender loving care throughout. The previous owner informed me that the car has only had premium fuel. I told him my SVT needed premium but didn't see why he would run the 170hp duratec on premium. He indicated premium goes through more refining which removes impurities and as a result his fuel filters are always very clean. The question of the day is whether I should continue to use premium in the Mystique or whether I should fill the tank with regular. What's everyone think?
