Changing the oil is probably the simplest auto
maintenance task there is, and it can be done by just about anyone. Frequent
oil changes can extend your car's life, and help it last longer. I've included
the steps here, please read them completely before you start. When you're done,
be sure to dispose of the old oil and filter responsibly; most auto parts
stores and repair shops typically have a 55-gallon drum into which you can
deposit these items; in exchange for this public service, the shop makes a few
bucks selling the old oil to recyclers.
The first step in changing your oil is finding an appropriate place to do it. Essentially, you are looking for a parking place with a bit of room for you to work and place your tools. The spot you use to change your oil doesn't have any special requirements other than a relatively level surface upon which you can work. It's not necessary to lift most cars to change the oil; the process only requires you to be under the car briefly, and most cars have enough ground clearance such that you can reach underneath and do what you need to do. Some very low cars might need to be jacked up and placed on secure jack stands, or you might want to give yourself more room to maneuver under the car; so if you want to lift the car for either of these reasons, be sure to follow the instructions with your jack and with the jack stands you use. Auto parts stores sell mats and pads that you can place under your car to catch oil spills, but I have found that these are not necessary if one works carefully.
Step One: Find An
Appropriate Place To Change Your Oil
The first step in changing your oil is finding an appropriate place to do it. Essentially, you are looking for a parking place with a bit of room for you to work and place your tools. The spot you use to change your oil doesn't have any special requirements other than a relatively level surface upon which you can work. It's not necessary to lift most cars to change the oil; the process only requires you to be under the car briefly, and most cars have enough ground clearance such that you can reach underneath and do what you need to do. Some very low cars might need to be jacked up and placed on secure jack stands, or you might want to give yourself more room to maneuver under the car; so if you want to lift the car for either of these reasons, be sure to follow the instructions with your jack and with the jack stands you use. Auto parts stores sell mats and pads that you can place under your car to catch oil spills, but I have found that these are not necessary if one works carefully.
Step Two: Drain The Oil
Next, you'll want
to drain the oil from your car's engine. Your engine should not be running
during this step, as running without oil can damage your engine (sometimes
catastrophically). If your engine is warm from running recently, the oil will
drain faster but you will need to work carefully to avoid burning yourself. To
drain the oil, you will need to place a catch basin underneath the car's oil
pan & drain plug. You can use any sort of low basin that fits under the
car, but auto parts stores sell plastic basins that work well for this purpose
(and often have a pour spot, which will be useful in a later step). The oil pan
(sometimes called the "sump") is located at the bottom of the engine,
it's an area where the engine oil collects when it's not circulating through
the engine. On the pan, there is a hole filled with a bolt called a "drain
plug." To drain the oil, unscrew the drain plug with an
appropriately-sized socket or wrench and withdraw it quickly, allowing the oil
to flow into the catch basin. While the oil is draining, inspect the drain
plug; some drain plugs have washers on the bolt, and some manufacturers specify
that this washer be changed periodically. When the oil has finished draining
(5-10 minutes), replace the drain plug.
Step Three: Remove The Oil Filter
The next step is
usually the most difficult and messy -- removing the oil filter. The oil filter
should be changed every time you change the oil. You should move the catch
basin on the ground under the car to a location underneath the oil filter
(which is usually located on the front of the engine); typically, when you
remove the oil filter a bit of oil spills out so you want to catch that. It's
sometimes possible to remove the oil filter by unscrewing it using your hands,
but there are "oil filter wrenches" available to increase your
leverage and make filter removal easier. Once you've removed the filter, you
can examine it to ensure that the included gasket has come off as well; if it
hasn't, remove it from the oil filter fitting on the engine. Before you put the
new filter on, apply a bit of new engine oil to the new filter's gasket to help
it seal better. You should apply the new filter using your hands only --
"hand tight" is the expressing shade tree mechanics use.
Step Four: Add New Oil
The last step is
adding the new oil. The amount and type of oil is specified by the car's
manufacturer, and is typically found in the owner's manual. If you've never
purchased motor oil before, you'll find a number of different brands and types
of oil for sale at your local auto parts store that meet your car's
manufacturer's specifications; more expensive oils generally have useful
additives, but any oil of the correct type is fine. Cheap oil, changed
frequently, is better than expensive oil changed infrequently! The oil is added
through the oil filler cap, which is typically on the top of the engine in an
easily accessible location. When you're done, you'll want to check your oil
level using your dipstick; be aware that some manufacturers specify that this
should be done after the engine has been running, otherwise you'll get
incorrect results.