Auto, if you had to drink a cup of any fluid used in your car (besides water) what would you drink...

Never had black coolant bro

Gasoline isn't very toxic to the gut, but the fumes will greatly affect breathing. From what I understand, drinking gasoline will make some of the fumes vaporize from your stomach, and potentially settle in your lungs, creating breathing problems. A drop can also go down the wrong pipe and really fuck things up. It's a really toxic substance.