Anyone ever hear of a turbo getting ("coked up" dealer term)? I lost a lot of power and massive drop in MPG while towing to Co. Took truck 2012 3500 drw dodge to dealer and they had it for 3 days. ...
In all seriousness, do you idle your truck before shutting it? Oil coking in the turbo is bad. My diesel tech is adamant about it. I wait to my pre turbo EGTs is below 300.