I have a true story that I'm almost afraid to admit. On Christmas day about seven or eight years ago, I had a potential emergency at a job site of mine. I told my wife that morning I was going to go and check on the job and I will be back before the Christmas gathering. Roads were icy that morning and I also needed fuel so I stopped at a BP gas station that was along the way ( I never have used a BP gas station before and my mind was definitely on the jobsite). About 10 miles down the road the truck starts jerking a little bit as if it were slipping on the ice a little bit, then a few miles later it was starting to pour out white smoke and running really rough and eventually by the time I got the job site short time later I couldn't get past second gear. At this point I'm thinking my fuel injectors are bad possibly as a buddy of mine had just recently replaced his and it sounded exactly like what was going on with his truck. Long story short, my wife ended up calling a flatbed for me and my truck and I took it home. I of course missed Christmas dinner as I was riding in a tow truck, and I was not a happy camper when I got home. The next morning we towed it to a family friend who has a auto repair shop and I proceeded to tell him what was going on with my truck. The first thing he did was to open my fuel cap and put his nose in there and then he said "you pumped gas in there" to which I said "that's BS, I remember grabbing the green handle" I didn't doubt what he was saying but at the same time I do remember grabbing the right handle at the gas station so I went back to the gas station and then my heart sank when I noticed that all the handles were green at the BP stations.
I was literally sick for the rest of the Christmas weekend as I do know it could be fatal to a diesel engine. When Monday morning rolled around things started to look up. Monday morning I called my insurance agent just in case there was a slim chance that insurance would cover it. He said "I never had a claim like this before, I will need to check into it and get back to you later this morning" In the meantime my mechanic called me back and said "I drained the tank, flushed the fuel lines, replace the fuel filter, change the oil, etc. and it seems to be running fine" a little while later my insurance agent calls back and says "this must be your lucky day, because if what you are telling me is accurate, it looks like we will cover the repair. But, if you knowingly pumped gas into it and continued to drive anyway, you are SOL"
At the end of the day, I drove that truck for another three years and 50,000 miles and never had an issue with the engine. I ended up calling my agent back and telling him it seems to be OK but let's not close this claim ticket yet as I don't know for sure if I am and out of the woods.
We still talk about that Christmas day, it was by far the worst Christmas of my life.
Dan