One more for keep it simple in terms of serviceability. I got involved in helping a family friend sell an '08 ish Dodge branded Mercedes Sprinter Class B motor home. (Factory van life) It was a low mile creme puff but it went through a few glow plugs while she had it. The last time was while I was helping her sell it and she was out of the country for an extended period of time so I had to deal with it. Despite the Dodge emblem in the front no Dodge Dealership within a literal 100 miles would touch it, I finally found one place 2 hours away, after that was 3.5 hrs away. No Diesel shops would touch it. I think it was $1200 for one glow plug, they were concerned about snapping it off and if that had happened they said the head would have to come off and that would be a couple grand. It seemed overly dramatic, but I called 20 places to find the 1 that would touch it.