Re: Gas milage decrease
Probably not your prob but did you use the Heavy duty lucas? or the synthetic? The HD it NOT to be used in the powerstrokes.
Our fuel mileage dropped about 1.5-2mpg in the last month or so as well. Like said above winter fuel, plus a few minutes of warm up time adds up fast.
2003 Exursion 7.3 diesel exhaust, intake, ts chip, banks exhaust housing, big head actuator all sittin on 20s w/ 35s.
1989 F350 460 propane, 4inch lift 39.5s
1988 bronco ii 2.3 turbo motor on propane