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Bad mileage on '05 6.0
Hello to y'all. I am a new poster. I had Ford replace my turbo and clean the EGR about 2000 miles ago on my '05 F450 4x4 flatbed w/33000 miles on it. The mileage went from 10.3 down to 7.1 on a 1500 mile trip. I put power service in the fuel when I bought it last fall in bulk. Anyone have an idea what caused the drop in mileage? Also, does anyone know of a programmer or module that will give me better mileage and not leave a footprint that might void the warranty? Thanks in advance. The logger.
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