There is the potential for me to have entirely too much fun in this thread, but I haven't surfed porn in 2 weeks.
I'll address a couple topics.
"Water in gas" - Any modern gas station has automated electronic H20 monitors permanently placed in every tank. If any tank monitoring fails, an alarm is triggered. In the good ol days, owners would manually dip their tanks with an H20-detecting paste that turned pink if any water was present. Sure, they could ignore it if they wanted to... until one of the regular inspections would take place.
So, you're thinking, "ah-ha", there could be water in there! Yep, there could be. Then, that water that's mixed into the gas (some of you that ever took 2 or more days worth of chemistry are actually laughing right now) gets sent to each individual nozzle.
Ever wonder what is in the inside of the pump you're standing in front of? Among other things, there is a filter. Guess what kind of filter... a water filter.
I see that no one has bothered to research why so many people really did/do have issues with BP fuel. Here's another hint. You are best off to select a brand of fuel and stick with it for the long haul. The net products that enter your car at different stations most certainly are not all the same.
Oh, and:
That's rock sold proof, right there.