Quote:
Originally Posted by regal
with a 1 mile commute your car will be considered sever conditions, this is because the unburnt fuel in the crankcase doesn't get warm enough to evaporate thru the pcv. Best thing you can do is change the oil often (every 4 months) to prevent the fuel left in the crankcase from dissolving the gaskets. This was a very common issue with Subaru engines requiring a complete $3k teardown with less than 30k miles for folks with very short commutes.
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Correct. My dad had a very short commute to his office for several years with his 325i. Infrequent oil changes also probably didn't help. When his head gasket finally went out and we opened it up and there was a surprising amount of buildup around the pcv and all over the cam sprocket.