In my 1998 Contour SE I have the zetec motor. Engine code "3" which I know is the stanard fuel engine. Then there is the engine code "Z" which i know is the flex fuel engine. The question I have is what is so different between the 2 engines? Besides what fuel it can run. Im figuring the "Z" engine can run 85% ethanol and the engine code "3" cant. I have done searches in here and cant find anything. Considering that 85% ethanol is cheaper is there a way I can convert my engine to run the same fuels as the "Z"? Considering I am running at least 100 miles a day to work and back. Thanx for the help in advance.
