Originally posted by Philip:
ehh, that 250 miles was after i put premium fuel mixed with regane fuel system "cleaner". I ran it to empty and now i'm trying Mobil 87 grade. It smells like sulfure every time i do a little "sprited" driving. I also thoguht these cars were rated at 20 mpg in the city? 250miles (actually closer to 230 when the 'add fuel' light came on)/14 gallon tank = 17.8 mpg max....to me thats seems a little low for a stock mystique with normal driving conditions and no higher than 4,000 rpm 95% of the time. am i just nagging?
I would say that is low. My gas light comes on at 300 to 310 with mixed driving and some spirited driving mixed in there. I average around 24 MPG. Something is up with your car!!!!!
You should notice a loss in performance if the cat(s) is/are plugged. I would say that your performance is probably hurting if you are only getting that kind of mileage.
