list of gas saving tips from best to worst

[bzipitidoo]

Reposting and adding to what I put in cleanmpg.

So far, I have gathered that this is what you should do to save gas, in order from the quickest, easiest, and cheapest ideas, to the more expensive, inconvenient, uncomfortable, dubious, and/or difficult ones.

1. inflate tires (to at least the maximum recommended on the tire walls)
2. throw out extra weight: clean out the beer (root beer of course, officer) cans and bottles, etc
3. change your driving habits: drive slower, accelerate more slowly, try to do acceleration on downhill slopes and avoid accelerating on uphill, coast up to stop lights, shut engine off when stopped.
4. change to lighter weight oil
5. install a gas mileage indicator (to help with #3)
6. Maintenance: Keep engine tuned. pay special attention to the O2 sensors

Those are the easiest and best. From here on it gets worse with respect to sacrifices, significant expenses, dubious benefits, or decreased safety.

7. Limit power use: no A/C, no loud radio, drive in daytime so won't have to use headlights. change incandescent bulbs to LEDs.
8. upgrade to low rolling resistance tires.
9. More radical changes in driving technique: Shut engine off while coasting (not always legal, is that?) and master technique of restarting engine with clutch rather than starter, make high G turns rather than touch those brakes,
10. more serious weight reduction: dump the spare tire and jack and carry a cell phone and an emergency number instead, trade out steel rims for lightweight aluminum, replace steel hood and fenders with carbon fiber (if available for your vehicle), maybe trade out glass side and rear windows for some sort of plastic, toss out the passenger and back seats
11. trade up to a more efficient car (if what you have is nothing special)
12. aftermarket engine upgrades: headers instead of stock exhaust manifold, camshafts specially tuned for FE . Hotter thermostat, electric fan for radiator (well, most cars do that nowadays), chips.
13. do it yourself aerodynamics: make skirts for the wheel wells, spoilers, build up back so it's more like a teardrop shape, do something about the side mirrors, and do what you can to smooth the underside.
14. add solar cells to lighten the load on the alternator.
15. Or dump the alternator and change to a deep cycle battery, and get a charger. recharge often.

And now, to boldly go where no one has gone before. Or very few have gone, because it's so uncertain and heart stoppingly expensive.

16. Radical body: Acquire a body made entirely from lightweight material, be that aluminum, magnesium, or other alloys, or composites. How one keeps it street legal, I don't know.
17. Radical engine work: make something that can burn methanol, and dispense with the radiator and water pump (Scientific American article from some 10 years ago), go with a dry sump (Hey Smokey column in Motor Trend from years ago), and where oh where is the 42V standard will all the cool gas saving features like electrically actuated valves with whatever timing was desired and no losses from camshafts, a single winding for both alternator and starter integrated with the flywheel and the wonderful ability to instantly start, etc. Still all ICE tho.


No doubt I missed plenty of ideas. And please discuss the ordering. I'd like to see something like the above list somewhere, perhaps as a FAQ. Or is there already such a list?