Hi-I have a 1997 22'Shasta Ford E-350 chassis with V-10 triton engine. Class C with over 100,000 miles.The rig was pretty consistently getting 10MPG. About a year or more ago the MPG dropped to about 8.5 MPG. When I changed the fuel filter the MPG w...
I don't see the logic of some of the replies. First the 10 MPG has been consistent over more than 14 years with maybe a plus or minus 0.5 MPG due to change of conditions e.g. speed, wind, hills etc. Second if it were conditions, spark plug wires, 02 ...
