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International Automotive Technicians Network
Re: 2013 MAXFORCE code 4227
Posted to HD/Fleet Forum on 2/1/2018

So got some more info off a bus site I use. This bus has been upgraded to a open system [no filter for the crankcase vent system]. The housing on the right v/c is free flow, basically a oil separator with down draft tube connected. The code is like a oil chang... Login to read more.