How to Replace the Oil Pan Gasket on a BMW E39

1. Raise the BMW with your car jack and place 2 jack stands below the vehicle to keep it raised and stable.
2. Locate the oil pan--a large, gray box below the engine--and drain the oil from it into a drain pan placed below the drain plug on the oil pan. Clean off any oil that gets on you with soap and water.
3. Remove the six bolts holding the oil pan to the vehicle using your socket wrench. This part may take some muscle, because the bolts can become quite stuck in their place.
4. Wedge the flat end of your large, flat-head screwdriver between the mating surfaces of the oil pan and the vehicle. Strike the butt with the mallet to pry off that section of the oil pan. Continue to do this all around the pan to remove it from the vehicle.
5. Take off the old gasket and clean off the surface it was on. Lay on the new gasket and reinstall the oil pan using the mounting bolts.