I would think something bad would happen if you put diesel fuel in a gas engine, but maybe not. There is a video on YouTube where diesel is put into the empty tank of a gasoline car and then it is driven around. Eventually, it starts to run rough, but it did not get worse than that. Then gasoline is put into the empty tank of a diesel car and the result was pretty much the same.
“I would think something bad would happen if you put diesel fuel in a gas engine, but maybe not. There is a video on YouTube where diesel is put into the empty tank of a gasoline car and then it is driven around. Eventually, it starts to run rough, but it did not get worse than that. Then gasoline is put into the empty tank of a diesel car, and the result was pretty much the same.”
Back when we had “Regular” leaded gas, the gas was pumped right behind the diesel in the transfer lines to clean them out. A ball about 2 feet in diameter filled with anti-freeze separated the flow. next came the mid-range, then the high test. So, all of the regular gas had a good amount of diesel.
If you put diesel in a gas car, it runs until you use all the gas in the lines, then it will stop running. Need to drain the tank and all lines to get it running again. Idiot brother found this out when he stole my 5 gal can of diesel to put in his Chevelle he was working on. Gasoline in a diesel will cause massive preignition and possible serious engine damage. Gas will combust from compression while pistons are still coming up, attempting to force them back down
Gasoline in a diesel vehicle that is run will almost surely ruin something.