1. Always keep your tires inflated to the proper pressure. The proper pressure
for your car's tires can be found on the label inside the driver side door. It
can also be found in your car's manual. Under-inflation is as bad as
over-inflation.
Good quality tire pressure gauges are not expensive; invest in one
and you can check your own pressure.
2. Also be sure your car is equipped with the proper size tires. Tires that are
the wrong size can wreck your gas mileage. The
proper tire size can also be found on the label inside the driver side door.
3. Keep your engine tuned. This means an oil change every three months or
every 5,000 miles.
4. Change your air filter with every other oil change.
5. Better gas mileage can be simple to achieve just by changing some
of your driving habits. Don't do quick starts--slowly and gradually pick up
speed. Maintain a steady speed on the highway; use your cruise control.
6. Use your air conditioner only when absolutely necessary. It takes more gas
to run the a/c.
7. Plan your trips. Make every trip count; run several errands in one trip.
8. My "personal mechanic" tells me it isn't necessary to buy the high-octane
gasoline for most cars. Check with your own mechanic and read your owner's
manual.
9. Walk whenever possible. If it's not an option to walk to town, you might at
least consider parking in a central location once you get to town, and walking
to do your errands instead of driving from place to place.
10. Pump your own gas. In our area, it is 5 to 10 cents a gallon cheaper to
pump your own over having an attendant put it in for you.