I can't match your numbers, my XFE average speed is almost always 47 mph. Current tank I'm about 250 miles into with 43.7 mpg indicated, 263,500 miles. Rust is taking it's toll, rocker panels getting holes and had to replace some fuel line a few weeks ago.
My best 3 tank is 45 mpg. Going to switch to E0 for the next 3 tanks to see if I can beat that. Had a fueling issue I just sorted out after replacing plugs, coils, fuel injectors and O2 sensor. Leaking evap purge valve so I disconnected it. 30 mpg last tank to 42-3 this tank. Compression is still good at 192 to 205.
Last edited by roosterk0031; 06-19-2019 at 01:12 PM..
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