LEt me start off by saying I added a bottle of X1-R gas treatment to mr car a week ago and didn't go anywhere. Today I take the car out for a healthy run and as I pull up to the gas station I get a CEL. I shut the car off, get gas, turn it back on and it is gone. Car feels kinda slugish. I am hauling much ass down the road and down shift to third..BOOM...CEL again!! I proceed with caution...it shuts off further down the road and haven't seen it sense.
Anybody want to take a guess what it was/is before I pull the codes tonight?