A common problem with BMW’s, especially the e90 models, is motor oil leaking from the vehicle. Although we recommend you leave any oil service to our automotive professionals, it’s both important and helpful to understand where these leaks may be coming from. Three common oil leak locations are the valve cover, oil pan, and oil filter housing. You’ll typically notice a valve cover oil leak when you see oil covering the top of your engine, as that’s where the cover is located. A blown gasket is a common cause for these types of leaks. Oil pan leaks, which occur due to a cracked pan, come from the bottom of your BMW and leave motor oil stains on your driveway. You’ll want to check in with our team to be sure, as the leak could also be coming from the oil housing filter, which is located on the left side of the engine. These leaks typically occur due to the rubber gasket hardening over time, which increases chances of cracking and breaking.