Dont want to be the jerk here, but... My shop teacher always told us if we wanted to destroy an engine to use bleach instead if sugar. I mean i am sure a bit wont do to much, but apparently its not a greath thing to have in their.
That's because bleach is an extreme oxidizer. The tiny trace bits of bleach that were in that bottle aren't going to rust the tank if dilluted with a new full tank of gas and run through quick.
If you pour bleach in a mostly empty gas tank on a car, it will rust the tank pretty dramatically. Rust will clog the fuel filter, or if there isn't one, the carb/injectors. Also, you'll have a destroyed gas tank.
The only way I'd be worried about this case is if the bleach bottle wasn't empty when he filled it up.
Sugar won't do anything to a car unless there's so much in there it clogs the filter.
If you doubt me, they did it all on mythbusters.
