I've had my 96 Zetec automatic for about 3 weeks. Done 2 tanks worth of gas. Fist one 22mpg. That was pre head gasket and timing belt job. Last tank, after head gasket and TB, 24.5 mpg. I still have the CEL on and had Autozone scan it today. Said the second O2 sensor showing lean. I'm guessing that might mean I'm burning richer than it should be, if the sensor is shot. My new plugs also appeared a bit blacker/sootier than I thought they should have been. Will be replacing the O2 sensor soon and hoping to get closer to the 30mpg mark. OH, that is with mixed city and hyway driving.
