Kenworth Northwest Inc

We are sorry to hear about all the issues you are experiencing with your truckThis unit was brought into our shop to have routine maintenance performedThe DPF filter was removedand cleanedWe reinstalled it and reset all the maintenance parametersThis unit appears to have operated for
months without issuesThe emissions systems on trucks are very complex.There are many issues that can develop over time, I see this unit has over 500,miles on itThese unfortunately are some of the common issues we see daily- A DPF filter can failbasically at any time depending on what type of issues are occurring up stream of the filterThe act of routine maintenance of cleaning does not guarantee or extend any type of warranty ofthe DPFPurchasing a used vehicle is riskyI am sure the seller sold as is where isKenworth does have a warranty for parts and labor of the parts replaced which is one year or 100,miles.Hope this answers your concerns Sincerely Rob B*** Servive Manager Kenworth Northwest