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International Automotive Technicians Network
Re: Duramax oil blowby
Posted to HD/Fleet Forum on 6/4/2009

Albin,

According to the tech (now keep in mind I personally have NOT inspected this vehicle, and it is at another shop), the oil does not appear overfull, nor does it appear to be diluted with fuel. However, the customer has complained of a loss in mileage. ... Login to read more.