PursuitSpecial
Well-Known Member
I've been keeping up with the fuel mileage on my Aspen since I started driving it and the last two times I've filled up the mileage has dropped off sharply. I checked the entire fuel system for leaks and there are none. The car went from getting about 16-18mpg in the city on regular gas now to 9mpg, and last time I filled it up I put premium in it and it only got worse. I checked the choke and it's opening, and the exhaust doesn't look black or smell rich. I only get on the throttle hard occasionally if I have to pass someone. I don't know if it's possible for a slant 6 to burn that much gas. I think someone might be stealing it, I live in a rough area and park near the road. I'm taking it on a 120 mile road trip tomorrow with a full tank so that'll either settle the question or leave me stranded from an unknown engine problem...