Q I have a 2003 BMW 325 with 158,000 miles that suffers from SOBS (sudden-onset billows of smoke). It happens only maybe once a month or so, but is very exciting. Imagine a James Bond car-chase scene, ...
The head gasket not only contains the pressure of controlled explosions within the cylinders, but it also isolates the cylinders, oil and cooling channels from each other. It provides a seal between ...
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