1) Save Up To 40% - Fixing a car that is noticeably out of tune
or has failed an emissions test can impove its gas mileage by an
average of 4.1 percent, though results vary based on the kind of repair
and how well it is done. If your car has a faulty oxygen sensor, your
gas mileage may improve as much as 40 percent.
2) Save Up To 10% - Replacing a clogged air filter
-can improve your car's gas mileage by as much as 10 percent. Your
car's air filter keeps impurities from damaging the inside of your
engine. Not only will replacing a dirty air filter save gas, it will
protect your engine.
4) Save Up To 3% - Check Tire Pressure - You
can improve your gas mileage by around 3.3 percent by keeping your
tires inflated to the proper pressure. Under-inflated tires can lower
gas mileage by 0.4 percent for every 1 psi drop in pressure of all four
tires. Tires usually drop 1 psi per Month Properly inflated tires are
safer and last longer. Each tire
should be periodically spun, balanced and checked for out-of-round.
When shopping for new tires, get large diameter tires for rear wheels.
Radial designs are the recognized fuel-savers; check manufacturer's
specifications for maximum tire pressures.
4) Save Up To 1% - You can improve your gas mileage by 1-2 percent by using the manufacturer's recommended grade of motor oil.
For example, using 10W-30 motor oil in an engine designed to use 5W-30
can lower your gas mileage by 1-2 percent. Using 5W-30 in an engine
designed for 5W-20 can lower your gas mileage by 1-1.5 percent. Also,
look for motor oil that says "Energy Conserving" on the API performance
symbol to be sure it contains friction-reducing additives.