Introducción
Use this guide to change the motor oil and filter on your E30.
Qué necesitas
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Lift the car enough to place a jack stand underneath a flat portion of the frame rail just behind the control arm bushing.
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Gently allow the car to fall onto the jackstand, lifting the car and re-adjusting its position as necessary.
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Once all of the weight has been transferred to the jack stand, tighten the release plug on the jack and leave it positioned under the jack point as seen in the third picture.
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Locate the oil pan drain plug. It will be located on the passenger side of the oil pan nearest the center of the car.
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Locate the oil filter. It will be located beneath the exhaust manifolds.
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Unscrew the oil filter and allow the oil to drain adequately before proceeding.
I’d probably try to use a filter “socket” before piercing the filter with a screwdriver. They attach to a socket wrench in the same way as a socket will…and you will get more leverage than with a strap.
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Dip your finger into a bit of the oil you just drained from the engine and spread it on the large O-ring around the open end of your new oil filter.
I suggest using the new oil to place a light sheen of oil on the rubber seal. The old oil adds dirt and contaminants. See the next step suggestion to avoid dirt or contaminants…. Also, not nearly so much oil should be put on the rubber. Only a coating, not any measurable amount. The amount of oil on that seal above is enough for 20 oil filters.
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Without getting any dirt or contaminants on the seal you just oiled, maneuver your new oil filter into position.
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Tighten the oil filter on the threads protruding from the oil filter housing.
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Finger tighten the drain plug back into the oil pan.
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Use your 17 mm wrench to tighten the drain plug.
save the copper washer that goes between the plug and the pan. You can buy new ones ten at a time from BMW parts places. These are really meant to be used only once. They yield to the torque and are meant to deform by flattening. I’ve used the same one for years at a time, though…
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Jack up the car slightly to remove the jack stand.
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Remove the jack stand and carefully let the car slowly drop to the ground.
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Remove the jack and set it aside.
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Twist the oil filler cap 1/4 turn counter-clockwise and remove it from the valve cover.
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Pack a clean paper towel below the oil filler hole on the valve cover to catch any oil that might spill.
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Fill the engine up with 4.5 Quarts of oil. The M20 engine uses 20W-50 conventional oil.
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After you've filled the oil, wipe up any spills with your towel.
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Reinstall the oil filler cap.
The use of 20W-50, or any weight for that matter, is highly dependent upon driving conditions, temperature, driving style…At this point, check your manual to see what it says. You might need a 10W-40, or a 15W-40, or a 15W-50….
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Start the engine, and let it run for a minute or two to allow the oil to circulate through the filter.
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I usually allow the car to sit for about 20 minutes, then check the oil once more. Add oil if necessary. Afterward, it is a good idea to drive for a bit (let the engine get up to operating temperature), then park it on a level surface and let it cool down for a couple hours before checking the oil level once more.
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Clean up all your materials. Be sure to recycle your oil at an auto parts store such as AutoZone. Most landfills will have special days when you can take your used oil filter to be recycled.
If you know your car, you should just be confident that you added the correct amount. There is no need to start it for a minute and then let it drain so that you can check the level. You can easily check the level after the first complete start/run cycle after you go to the store or something. A master realizes that they added the 4.5 quarts, there is no way you would be so far off that you would harm the car. Bottles of oil have marks on the side that will let you know how much you added from partial gallons or quarts.
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2 comentarios
Boy, oil changes from the dealership sure have gotten expensive, and places like jiffy lube wont touch a BMW (probably a good thing). I usually have my boyfriend change the oil in our cars, but this guide is so complete....between the photos and the description, the instructions are so clear, that I think I am going to start changing the oil in my 1987 325i myself. He has a lot on his plate, so if I can take over some of the simple maintenance chores on my car, I think he would appreciate it. Thank you for this comprehensive guide.
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