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Pelican Technical Article:

Oil and Filter Change

Steve Vernon

Time:

1 hour1 hr

Tab:

$40

Talent:

*

Tools:

13mm wrench, oil filter socket, extension, ratchet, drain pan

Applicable Models:

Mercedes-Benz 260E (1987-89)
Mercedes-Benz 300CE (1988-93)
Mercedes-Benz 300E (1986-93)
Mercedes-Benz 300TE (1988-92)
Mercedes-Benz E320 (1994-95)

Parts Required:

Oil and filter

Hot Tip:

Get the engine warm before you drain the oil

Performance Gain:

Longer engine life

Complementary Modification:

Flush your cooling system and replace your radiator hoses

One of the most common tasks to perform is replacing your engine oil. Frequent oil changes are perhaps the most important procedure you can do to maintain and prolong the life of your engine. With the better oils that are available today, the requirement for frequent changes is diminishing. Even though Mercedes Benz recommends oil change intervals that are much further apart than in the past, I usually recommend that you keep the changes under the 5,000-mile limit. If you don't drive your car too often, you should change the oil at least once a year to keep things fresh.

The first thing you need to do is to make sure that you have everything that is required for the job. Nothing is more frustrating than emptying your oil, only to find out that you don't have a replacement filter or enough oil. You will need an oil filter kit, a 13mm socket or wrench, an oil filter removal socket or tool with a long extension and ratchet, a roll of paper towels, a very large oil pan or bucket, and eight liters of oil. Note: check with your owners manual for the amount and type of oil your engine needs. Start by driving the car around, and let it heat up to operating temperature. You'll want to empty your oil when it's hot, because the heat makes the oil flow a lot easier. As an added benefit, more particles of metal and dirt will come out when the oil is emptied.

Safely jack the car up and place it on jack stands and remove the under engine tray; please see our article on safely jacking up and supporting your car and removing your under body trays. Keep in mind that the oil will be hot, so it's a good idea to wear a set of gloves and have plenty of paper towels on hand to clean up any oil that may spill. Also, anytime you work under your car, wear safety glasses.

The oil drain plug is located on the front left side of the oil pan (red arrow).
Figure 1

The oil drain plug is located on the front left side of the oil pan (red arrow).

With the car safely supported on jack stands remove the 13mm drain plug from the bottom of the sump (red arrow).
Figure 2

With the car safely supported on jack stands remove the 13mm drain plug from the bottom of the sump (red arrow).

Locate the oil filler cap on the top of the engine (red arrow) and remove the cap.
Figure 3

Locate the oil filler cap on the top of the engine (red arrow) and remove the cap. This will help the oil drain. You are going to fill the engine with new oil through this opening after you change the filter.

Always dispose used motor oil according to the regulations where you live.
Figure 4

Always dispose used motor oil according to the regulations where you live. Most oil change shops or your neighborhood parts store will take your old oil and filter to be recycled properly. With all the oil drained install a new washer on the drain plug and reinstall the plug.

The oil filter is located on the left side of the engine close to the firewall and behind the intake runners (red arrow).
Figure 5

The oil filter is located on the left side of the engine close to the firewall and behind the intake runners (red arrow).

You will need to use an oil filter removal tool, which is basically a large socket that fits over the filter housing cap (red arrow).
Figure 6

You will need to use an oil filter removal tool, which is basically a large socket that fits over the filter housing cap (red arrow). There is not enough room to get a band oil filter removal tool into this spot. Place the oil removal socket over the housing cap, attach a long extension and loosen the cap.

The cap pulls out from the top and the filter should come with it (red arrow).
Figure 7

The cap pulls out from the top and the filter should come with it (red arrow). If the cap comes off and the filter stays in the housing reach in and remove the filter. Be prepared as the filter will be soaked in oil and drip.

Separate the filter cartridge (yellow arrow) from the cap.
Figure 8

Separate the filter cartridge (yellow arrow) from the cap. Remove the old O-ring from the cap (red arrow). Install the new O-ring and filter cartridge in the cap and reinstall the cap to the housing. Use a little clean oil on the O-ring before installation to lubricate it.

Do not forget to refill the motor with new oil.
Figure 9

Do not forget to refill the motor with new oil. Remember to check with your owners manual for the type and amount of oil needed. Also it is easier to add oil than take some out. Add oil. Allow a few minutes for the oil to work its way down into the pan. Check for leaks and then top up as needed. Once you are close on the dipstick start the motor. Allow it to idle while you check for leaks and then check the level again, adding oil as needed.

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