BMW Valve Cover
Failure to correct leaks can lead to overheating, prematurely worn parts, breakdowns and hazardous driving conditions. So whenever signs of fluid leakage are present under your BMW, it pays to investigate. But hindering an oil leak is really frustrating if you don't find the correct source of the oil leak, right? Believe it or not but one of the source of oil leaks are your BMW valve covers.
The valve cover is the long lid made of either plastic or metal that lays on top of the cylinder head, covering the various engine valve train components, specifically the valves. Aside from this main function, the valve cover is also responsible for containing lubricant oil in the valve train area. But while it is the function of your BMW valve cover to contain the lubricant oil as it drips back to the bottom of the engine, sometimes it is the valve cover itself that causes the leak.
What causes the leak? One is the warping of the BMW valve cover due to the heat of the engine core which causes oil to seep through the valve cover gasket. Another is that if your BMW valve covers are corroded already, it may develop holes in its surface that also causes the leak. But these things can be prevented if you only know the proper maintenance of your vehicle. However, if you really think you need a valve cover replacement, then have it replaced right away.