Summary, Many are asking for summaries. Here's mine. Regarding Deisel only.
1. Breakdowns more common with rigs less than 5 to 7 years old
2. Most often filters, electrical, and grounding wires
3. Rigs 10+ yrs old; fewer posts by far, mostly aging electrical
parts or wires
Best prevention seems to me to inspect carefully during annual service ALL OF THE ENGINE COMPONETS & WIRES. Those posts indicating no on the road breakdowns are suggesting they do this religiously.
I would like to see other summaries also.