if you can, run at 1/2 tank of gas
remove all you can; carpets, door panels, old safes, beer, dogs over 5 lbs...etc. we stripped a 78 Bronco...replaced all interior panels with polyester fabric. Take off any brush guards, roof racks etc.
ch underside for globs of mud; wash off..dont soak electr, connectors.
check plugs, filters, etc.; replace if nec.
check timing... some adj timing till engine pings then retard slightly
for best mpg, maintaini a constant speed between 40 to 50 mph. exc in school zones!..lol
shut off ac & Defroster
ck tire pressure, increase it slightly from "normal"..do this at least once a month and more when temps change in seasons
buy gas when temp is at coolest.
Elemental Truths: Cheap(er) Gasoline