My fuel light comes on just before the needle hits E in mine. I got another 40 miles after the EVIC says "0 miles to empty," which happens when the needle hits E. Sounds like they're all calibrated a little different.
My only ugly fillup happened when I was at a truckstop that didn't have a lowflow nozzle. Those high pressure, large capacity big truck nozzles don't fit all the way down into the truck. Pull that handle, wait for a sec, and Paawhoooooosh!! It was like my Liberty puked on me. I smelled like diesel for a week or so. The jacket I was wearing that day still smells like it (and I've washed it a dozen times). I call it my "diesel jacket" now). Got big oily stains on my boots too. I think of it as diesel character building.

But I will admit that one of my first upgrades was slush mats. Don't really want that on the carpet.
I carry a tub of citrus degreaser waterless hand wash in the Jeep, along with my PS cetane boost and a big roll of shop towels. The shop towels work just as well as rubber gloves and I don't have to worry about whether to wear my cold-weather gloves or rubber gloves when filling up in colder climes.
I've had a LOT of people give me odd stares when I'm pumping diesel, but no one ever shut the pump off on me. That's pretty funny! The most memorable for me was the Jamaican guy in the rest stop in Jersey who looked at me like I was on crack when I asked him where the diesel pump was. He kept asking me, "Dis a deesl?" It was great. Before long, he called everyone else over and started explaining to them that "dis a deesel!" I had an even bigger audience after I put the hood up for them.
What a great truck!