Hello, I'm a pursuing my degree as an electrical engineer and I drive 100 miles round trip to school on the Indiana toll road. I have a 1992 Lexus LS400 in almost perfect condition. It's got a 4 liter V8 to pull the tank of a car down the road but I get decent mileage out of it and I hope to get even more. Right now in the summer it gets 20mpg town, 21-22 highway. Winter is worse at 19-20mpg highway. Here is a list of what I might do this coming fall semester.
*Vacuum Gauge... I really do have a lead foot right now
*Under Engine cover... I fabricated a stainless steel cover to keep engine heat and snow/salt from the engine.
*Hot Air Intake attachment.. that sucks air after the radiator?
*Inflate tires from 32psi to 38-40?.. IDK I want the ability to dodge highway debris with grip.
*Drive Slower... I use the 5-10mph over posting rule..I'm bad
*Cover Some of the Radiator in the Winter.. Saves gas and a rusted radiator
*Some Engine related maintenance.. PCV leaking.. fuel filter..etc
Right now I have 5w-30 full syn and the 180,000 mile engine loves it. I'm not looking to go balls out on mods, I'm on a really nice budget for school and so 20 mpg gas money is not alarming to me. It's just that I drive 100 miles a day to school and little savings adds up real quick.
Using excel spreadsheet estimating # of trips each semester, it's around 8500-10000 miles per semester!