How do you change oil and filter on BMW 740il?

Answer 1

If the car is cold, run the engine to normal operating temperature and then let it rest for 20-30 minutes. This heats the oil and agitates any settled debris back into the oil, to maximize your oil change.

Remove the oil fill cap on the engine first.

The oil filter is changed from top side. Open the hood and the filter housing is located on your right (car's left/driver's side), lower right side of the engine compartment in front of the power steering fluid canister. You will need a 36mm oil cap socket wrench to open the lid of the oil filter housing. Caution: be careful not to damage the oil filter mount--use slow and steady pressure on the wrench until it loosens. Screw off the lid. Lift and remove the old filter.

Under the car: open and remove the plastic cover that covers the oil pan. The cover is in the middle rear of the the engine splash shield, and is held by a dowel pin screw. The oil pan cover can be opened without removing the entire splash shield. The 17mm drain plug is located on the oil pan. Place a tray to catch the used oil under the drain plug and loosen and remove the plug. Caution: the oil will be warm to hot, be sure to wear protective gloves! Let the car drain for 45 minutes or so until the oil stops dripping or dripping a drop every few seconds.

Replace the filter and the o-ring on the lid, coating it with some used or new oil. The o-ring should be included with the new filter. Put the lid back on and tighten to torque specs (25nm). As with all things plastic, use caution.

Once oil is fully drained, install the new drain plug (recommended) and new copper crush washer (should be included with the new oil filter packaging). Torque to spec (25nm).

Fill with new BMW-approved full synthetic oil only. BMW 740i/iL requires 7.9 quarts. Fill with 7 quarts first. You may not have drained every bit of oil in the engine, so your refill may vary from the maximum capacity. Wait a few minutes and check level with the dipstick. Add remaining oil to correct level. NEVER add more than 7.9 quarts of new oil under any circumstances to prevent overfilling!

Close the oil fill cap. Make sure the dipstick is tightly re-inserted. Start the car and check for leaks under the car and around the filter housing once oil pressure rises. Check for any oil warning lights on the dash. Do not drive off until everything checks out OK!