I really think that it can be distilled to a few bullet points.
As others have said, the larger truck style nozzles don't fit. This is simple to avoid, even at large truck stops. When you drive up to a station *don't* drive to where the tractor trailers are. Drive up to where the regular cars are, and look for a pump with a green handle
(unless it's BP, with their stupid corporate branding that breaks the "green is diesel" rule). A filler nozzle in this area should practically always fit. I fill up at truck stops while traveling, no sweat.
As for biodiesel, people have opinions about biodiesel, but you basically don't have to worry about the stuff being sold at typical stations or truck stops. As far as I know, places that have biodiesel blend put out a "biodiesel" sticker on the pump
, so if you care one way or the other you can tell. B5 to B20 are okay.
3. Buy some disposable nitrile gloves to wear while refueling.
Seriously. I suggest blue or purple color that will show oil, but "anything but black" is a reasonable choice. Diesel doesn't evaporate like gasoline, so pump handles tend to be grimy and oily. Something like this
, but you should be able to get them at home improvement stores or even Walmart
. Put it on, refuel, peel it off inside out by holding the wrist edge and pulling your hand out, dispose.
I use the free GasBuddy app on my smartphone and have it filter by "Diesel". Shows stations on the map, prices, etc. But seriously, you can just go to a truck stop. You *know* they have diesel, haha.