Internal combustion engine blowby, whether gasoline or diesel, occurs when part of the compressed mixture of air and fuel leaks past the piston rings during the compression or power strokes of a four-cycle engine. This condition causes various problems ranging from decreased fuel economy to a potential engine runaway, but performing essential diesel engine maintenance can reduce its causes and help you avoid costly repairs. Diesel engines benefit from heavy-duty components and low rpm operation. The lubricating properties of
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