How to change oil in 1989 735i?

Answer 1

To change the oil in a 1989 BMW 735i, first, ensure the engine is warm for better oil drainage, then turn off the engine and allow it to cool slightly. Place a drain pan under the oil pan, remove the drain plug with a socket wrench, and let the old oil completely drain out. Replace the drain plug, remove the old oil filter using an oil filter wrench, and install a new filter with a bit of new oil on the gasket. Finally, refill the engine with fresh oil through the oil filler cap, checking the level with the dipstick, and start the engine to circulate the oil before checking for leaks.