I have a 1996 Bmw 318i that my girlfriend just recently gave me and it been setting for about a year due to a oil leak and over heating. The oil leak is pretty bad and a quart can run out in approx 30 to 40 min. What could the problem be and is it worth fixing or just replacing the engine?
If it overheated at some point, there might be some head warpage or other issues. So fixing the gasket/leak might not be then end of your problems. Check your valve cover or Oil filter housing gasket, and oil pan gasket to find the leak. Maybe the Evap hoses? Only way to know if to open the the top end of the motor up.
if the leak is so big, you could be able to actually see the oil coming out. The first thing is to see if the leak is a separate issue or if it is a product of the overheating. If it is in fact an overheating that caused this leak something is definitely wrong with the head or a blown gasket if not could be just an oil seal gone bad.
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