Some cars now have what is called a “maintenance-free battery” which should not be tampered with. It is easy to tell if you have this kind of battery because it has a flat top with no openings. But most cars have the standard battery that has 6 cells that need occasional refilling.
1) To access the 6 caps pry them off with a flat-head screwdriver, or just unscrew the six caps.
2) It is better to fill the battery cells with distilled water because of the fact that regular water has contaminants that can cause corrosive build up in the batteries terminals.
3) The battery cells should be filled to the bottom of the fill hole and no further.
CAUTION: Battery acid is very dangerous to the skin and eyes so be sure to wear eye protection and gloves when doing this procedure.
Changing Your Air Filter
According to the EPA’s FuelEconomy.com web site, you can increase your gas mileage up to 10% just by changing your air filter!
When changing your air filter be sure to park your car in the shade and wait for it to cool down. You can do this procedure with two medium sized screwdrivers, one standard and one Phillips head. The air filter is normally located in a black plastic casement near the center of the engine near the top. (Normally in larger vehicles it is located off to the side)
1) Locate the Air filter and take off the casing. (Normally the casing is held together by large metal clips that need to be pried back, or it’s screwed together.)
2) Once the casing is off take out the air filter and look at it (it is normally bright colors like orange, yellow or red)
3) Hold it up at arms length looking at it straight on, bend it back and look in the crevices.
4) Are the crevices dirty? No big deal, just replace it.
5) Close the casing and put the air filter in a bag. (You will want to take it with you to the store so you can match it correctly.)
6) Once you buy the new air filter install it, and seal up the air filter.
Note: It is okay to drive a short distance without an air filter but, it is better to put the dirty air filter back in till you get a new one.
Tire Pressure
The National Highway Transportation Safety Administration (NHTSA) estimates that one-in-four cars and 1-in-3 light trucks and SUVs has one or more tires under-inflated by 8 pounds per square inch (psi) or more. The EPA estimates that for every one psi of under-inflation, fuel economy drops by 0.4%. That may not seem like much, but if your tires are under-inflated by 8 pounds per square inch, that’s a 3.2% drop in fuel economy. NHTSA estimates that about 1.2 billion gallons of fuel are wasted annually due to under-inflated tires. Proper inflation of your tires will not only improve fuel economy, it will make your tires last longer and your car handle better.