Thanks for the reply...Yes, I added Star Tron Enzyme Fuel Treatment and it literally has cleaned my engine, went through a few filters. But now I'm going to stay with the new fuel I used. I find that when I'm low on fuel she starts to kind of shake, which in the past meant the car would stop because of the clogged fuel filter, so now when I feel a hint of that I fill up the tank. Seems to run better the more fuel I have in my car.