In the cooling system, the oil pan plays an important role. When your BMW is not running and the engine is resting, there are some oil flows down from the sides of the crankcase, and oil pans collects these oils. In other words, oil pan acts like an oil reservoir of the crankcase. The oil pan is usually made of thin steel and shaped into a deeper section. The location of the oil pan is where the oil pump is. However, after a longtime usage, the oil pan can be broken or leak, so check your oil pan in time for you and your family safety. If you find consistent oil leak in the same place under your BMW, or if you smell a smoke from engine compartment, then there is a possibility that your oil pan is in a risky condition. What you need to do next is getting a new oil pan and changing it by yourself, and you can save a lot of money in this way. What we can help you is we offer you all BMW genuine OEM oil pan with an attractive price.