look at the cucv military vehicle deuce and a half or M35 multifuel motor, can run her on gasoline provided that you dump a gallon of motor oil in the tank "used at that"
see: LDT 465 by hercules, white motor company or continental motor company, it is a 478ci 7.8L turbo inline six, and will run on damn near anything, there are rumors of guys running low on fuel and pissing in the tank to make it back to base, but I have been in that situation and it isn't a rumor anymore.

they really will run on darn near anything, I can't remember the name of the book but there was a guy at the turn of the century that wrote a book, published around 1900 that did experiments and documented what could and could-not be used in various ICE's, to include gasses, steam, compressed air, among other things.