I have an SUV!

[DarbyWalters]

I think for SUVs with fuel tanks of 20 gallons or bigger...running 1/4 to save weight helps for city driving. I fill up for longer trips and to check mileage...just starting this so no "hard numbers" yet...but 15 gallons missing will save me about 108# of weight.

[kamesama980]

getting the engine tuned up and cleaned out would be a good idea. unless it says so in the manual, your car shouldn't need premium and that it does is a sign something's wrong. probably caboned up combustion chambers. that'll get you a few mpg and allow you to run regular. do the ol' seafoam treatment to help with that.

full tune up and filter change is always a good idea unless you know when they were last done and that they're good. (however, an ignition problem will NOT be fixed by running higher octane so that's not the primary problem)

[cfg83]

deathvalleydan -

Welcome to GS! Listen to DarbyWalters :

Originally Posted by DarbyWalters

A couple of other things to remember:

Keeping a vehicle as long as you have actually helps the environment. It takes resources to build/transport a new vehicle and energy to demolish/dispose of an older vehicle even with recycling.

Also, since you have a vehicle that is already paid for and serves a real purpose...you are ahead of the game or at least on level ground. Just do what you can do and try to combine trips ect.

I like to think the same. Coasting in Neutral and the Scangauge will help.

CarloSW2