Engineering Magazines

Some owners keep their automobiles running like finely tuned Swiss watches. They carefully follow all of the manufacturer’s recommendations in the owner’s manual. They buy premium grade oil, order regular check-ups and rush to the repair shop when they detect any unusual noise.

However, most of us are inclined to skimp a little on maintenance and some of us never see the repair shop until the car quits. Sometimes this is due to finances but most of the time it is a matter of convenience. We need our cars to take us where we have to go and we’re reluctant to give them up even for a short period of time.

But, now that gasoline is still at astronomical prices, we need to re-think our maintenance practices. Letting some things go can cost us money in extra fuel consumption. For instance, repairing a faulty oxygen sensor can result in a 40% improvement in gas mileage. Tuning an engine can increase mileage by 4%.

You should be sure that your air filter is always clean. If your engine is fuel injected, airflow regulates the quantity of fuel that is burned. The process of mixing air and fuel is quite precise so the filter needs to be clean to ensure an efficient mixture. The air filter also protects your engine from impurities, extending the life of the engine as well as saving on gas.

It is also important to check oil regularly and change dirty oil. An engine with clean oil operates at maximum efficiency, which translates into gas savings. You should definitely use the grade of motor oil recommended by the manufacturer. Using one weight oil in an engine designed for a different weight can lower gas mileage up to 2%.

You can also realize greater efficiency from using a high-quality multi-grade oil but if there is a price difference you need to compare the costs involved.

And when your tires are not properly inflated, your gas mileage decreases by 5%. The Environmental Protection Agency estimates that millions of American cars run on tires that are not correctly inflated. Correctly inflated tires will also last longer and are safer.

The owner’s manual always states the correct pressure for the tires. If you are driving a pre-owned car with no owner’s manual, you can call a local dealer or research the information on the net.

Radial tires are supposed to improve gas mileage by 5% when driving in the city and by 7% when driving on a highway. So if you don’t already use radials, you might consider switching.

Another benefit of radial tires is that they last longer. However, you should be careful not to mix radials with conventional tires unless the owner’s manual clearly states that this procedure is acceptable for that model car.

In addition, tires need to be properly balanced. Properly balanced tires reduce road friction thereby increasing fuel efficiency.

You also need to check wheel alignment to ensure that wheels are properly aligned. Wheels that are out of alignment also cause your car to burn extra fuel.

Although the savings from each practice might be small, the overall savings is worth the extra effort.

Save at least $30 by changing your oil yourself every time. When it comes time to change the oil of your Ford Tempo, doing it yourself could save you up to $30 or more. How do you know when to change your oil?

Change your oil every 3000 miles or about every 3 months, whichever comes first. SAE 5W-30 motor oil is the preferred motor oil to use for all weathering conditions, but if you are like me and live in moderate to hot temperatures then SAE 10W-30 motor oil is also acceptable.

Never change your engine oil while the engine is hot. This should be common sense. If your engine is hot, wait 2 hours. You could suffer terrible burns from your car’s engine or oil drainage. We don’t want any hospital bills over here.

Locate your car’s oil pan drain plug. Place an oil pan underneath the plug so you don’t spill any oil on the ground. Unscrew the drain plug and let the oil drain out for about 20 minutes to ensure all oil has poured out. Screw the plug back in. If you start pouring oil in without the plug tightly fastened then you are in for a greasy mess.

Locate the oil filter, unscrew it, and take it off. The oil filter is the piece that is shaped like half a cylinder. Be careful because oil will want to leak out of it after you unscrew it so keep it upside down. Then screw the new oil filter in.

Pour the correct amount of oil in for your vehicle. For a 2.3L engine, the oil amount should be 5 quarts. If you have a 2.3L engine, make sure the oil filter says FL-300. For 3.0L Tempo engines, you will want to put only 4.5 quarts of oil in, and make sure the oil filter says FL-400A.

If your car has a lot of miles on it (lets say +80,000), it might be a good idea to use oil that is specifically designed for cars with high mileage. I use Valvoline High Mileage and it seems to work pretty good for my 1993 Tempo (+120,000 mi).

A quick auto maintenance tip to keep in mind is to periodically check the ground underneath your parked vehicle. Look for any liquids that look like they are new. If it looks like fresh liquid, there could be a chance that it is coming from your car. Be sure to keep an eye the next time your car is parked for a while to confirm any suspicious liquid.

Just for reference, reddish liquid will be power steering fluid, brownish liquid will probably be oil, and if it is a bluish liquid it is most likely radiator coolant.

Check your oil level every couple of weeks. Make sure your oil level is within the regulated guidelines located at the bottom of your oil dip stick. Your dip stick is the stick with a round, usually colored ring at the top. All you do is pull it out, wipe off excess oil with a rag, stick it back in, pull it out again, hold it level, and decipher where the oil line stops.

Don’t be an idiot. Always properly dispose of any used oil. Local auto parts stores and service stations usually have a receptacle in the back of their store where you can recycle any used oil. Start recycling now before we jack Earth up anymore and there is nothing left to protect.