I have a '91 ford pickup and I am only getting 12 m.p.g. I don't know if it has to do with the oxygen sensor or anything like that. If you have any input, please let me know. Thanks.

 

i used to have a 90 with the 5.0 and was getting 10-11 mpg on a good tank. i have no idea why it was that bad. so 12 might be average i have no idea.

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2000 4.2l V-6 w/sport package std. cab. 2wd, bright red
billet grille
clear corners
herculiner bed liner
k&n filter
sony head unit
two 10" kicker comps.
sony amp
viper alarm

future: (being in college cuts most of the funds)
spindle lift
fipk
chip
headers
exhaust

 

my uncle has a mustang 5.0
it gets about 20mpg street
and he has superchip flomasters and few other small mods