I have a flex fuel 4 cylinder and I bought it used. I got this for better gas mileage, but have noticed that it does worse than my other s-10 with a 4.3 v6. I know someone with another flex fuel and he is getting great mileage (30 or better on the highway) mine only gets 18-20. I have done new plugs, wires and fuel filter. What could be the problem? My other truck, a v6 I get 24 mpg.
Mar 15, 2008 at 1:09 AM