It is examples like this that have caused me to test every drop of fuel that goes into my diesel tow vehicle.
I do this by having a glass jar that holds a gallon of fuel in the rear of my pickup's bed. Before I begin fueling, I pump about a half-gallon of diesel into that jar. I then observe the diesel for a few seconds. That's all it takes for any substantial amount of water to settle into bubbles in the bottom of the jar, or to see if the fuel is full of sediment matter.
If no bubbles or sediment appear in the jar, I then proceed to fuel up the 91-gallon auxiliary tank in the bed. All of the diesel that goes into my truck's factory tanks comes from the auxiliary tank, through sediment and water filters installed on the tank.
All this may seem paranoid to some. But experiences like the OP reports prove that sometimes, paranoids are right.
