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2torial #0601:
Learn2 Change Your Oil
"Forty bucks for an oil change!?!"
Yes folks, forty bucks buys a whole lot of
cornflakes. That's one of the major reasons why so
many people change their own oil. There's a small
initial investment for supplies, but you'll make
that back the first time you do it yourself. Just
ask your Great-Uncle Leopold if he ever had a
stranger change his jalopy's oil, then watch his
face change color three times in twenty seconds as
he realizes that you're serious.
"Does my oil even need to be changed?" you ask.
Manufacturer's recommendations are once every 3,000
to 7,500 miles, depending on the car. Most folks
change it once every 6,000 miles. Conventional
wisdom says that changing more often is better, but
some experts now disagree.
Changing oil can be a messy job, so wear old
clothes and have some hand cleaner handy. Make sure
that your car is parked on a level grade, rather
than on any sort of hill or inclined driveway.
You'll need some place to take your old oil, so
call a few gas stations or town hall to find out
who recycles used oil.
Warm oil drains more easily than cold oil, so
run your engine for just a few minutes before you
start. But be very careful: Don't let the
oil get too hot, as some may splash on you.
Choose your oil
Motor oils are defined by grade. Today's
oils are generally multi-grade, which means
that they are suitable for use in a range of
temperatures.
For instance, when an oil is specified as
"10W40," the first number is a measure of viscosity
(resistance to flow) at lower temperatures, while
the second number is a measure of viscosity at
higher temperatures. A rating of "5W30" would
indicate an oil that flows more easily at both low
and high temperatures than a "10W40." In short, the
higher the grade, the thicker the oil.
Many people prefer heavier oil (greater
viscosity) for protection in hot weather and
lighter oil (lower viscosity) for use in freezing
temperatures. The best selling grades in the U.S.
are 5W30 and 10W30 oils. If you're still unsure,
read over the owner's manual again or consult a
local mechanic.
Position the car
Again, make sure that you're on level ground,
and that there are no cats sitting on top of your
nice, warm engine block.
- Set the metal ramps in front of your front
tires, and drive your car up onto them. It can
help to have a friend around to tell you when to
stop.
Set your emergency brake. If you have a manual
transmission, put the car in first gear. If you
have an automatic, set it to Park. Place the wheel
blocks under the rear wheels to prevent any chance
of the car rolling back.
Drain the old oil
Again, watch out for hot oil! It's not a bad
idea to wear safety glasses or even prescription
glasses.
- Take your wrench and shallow pan and crawl under the car.
Find the oil plug under the engine block that unscrews on
the underside of the oil pan.
- Place the shallow pan under the plug and unscrew the plug
(counter-clockwise) with the wrench. (If the wrench slips
and starts to round off the bolt head, try a scket wrench
instead.)
- The oil will stream out rapidly, so be careful. Chances
are, the plug will fall into the pan along with the oil.
Don't worry when it happens.
When all the oil has drained into the pan, fish
out the plug (here's where rubber gloves come in
handy) and screw it back in. Tighten it firmly, but
not so hard that you strip the threads.
Change the filter
Always change the filter whenever you change the
oil. Clean oil + a dirty filter = dirty oil.
- You'll be able to access the old filter from
either above or below the car. Place the oil
filter wrench around the filter's body. It will
tighten itself up when you turn the wrench
counter-clockwise to remove the oil filter.
- The old filter may stick initially, but will
then unscrew easily. Unscrew it completely and
carefully put it aside. It will be full of oil.
- Dip your fingertip in the old oil
(convenient) or take a few drops from a new
quart of oil (cleaner). Use it to lubricate the
circular edge of the new filter, where it will
contact the metal engine surface.
- Screw the new filter in with your hand, and
tighten it firmly without overtightening--one
quarter turn after snug.
Finish it up
You're almost home! All you have to do is add
the new oil and clean up.
- On top of the engine you'll find a knob that
says "oil." Unscrew it and pour in the amount
and type of oil recommended for your car. Look
in your manual for the location of the knob if
it's not obvious. Save the bottles for the
disposal of the old oil.
- Screw the knob back on and wipe the area
clean with the rag. Close the hood and start the
engine.
- With the engine running, carefully check
around the filter for any leaks. A leak will
appear as some seepage at the oil filter
connection or on the filter. If there is a leak,
tighten up the oil filter a little more. If no
leaks are found, back the car off of the ramps.
Pour the oil out of the pan, and using the
funnel, transfer it to the empty oil bottles or
milk containers. Take the used oil to the motor oil
recycler that you found (you did find one,
right?).
-end-

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