2021 MX13 pac car dpf and scr efficiency issues in need of egr tuneup

[mikkhh]

Well well, those DPF cans have been wet cleaned like one and only official dealership around here suggested. Absolutely horrible advice and goes against the aftertreatment systems owner's manual (either DRY CLEAN or REPLACE cans) that is available on Paccar website.

New DPF is like 25k usd from dealer... And those same Paccar manuals that are available for FREE on official Paccar website mention those needs for cleaning and checking of sensors. Yet it seems like dealership has not checked those sensors (or maybe I am wrongly accusing them and IMAP sensors do get plugged with soot in less than 20 000 miles) and has replaced those expensive nOx sensors. Turbo replacements would not have been that far away in terms of next "repairs" (some other brand dealerships openly admit, that they have no idea what is going on, we will just replace parts randomly until we find out what is wrong and you will be charged for all repairs not only for the part that was the culprit in the first place). Maybe they have hard time reading or understanding English? Some who work at dealer even claim that they have never ever heard about those manuals on Paccar website.

Going to talk with a small fleet owner about repairs and what issues there are on trucks (has about 50 trucks, kept no more than 600 000 miles and all are purchased brand new). He mentioned something about the need to replace turbos on those MX13 's .