Actually, I don't think that a diesel nozzle will fit into the unleaded car's filler inlet - the nozzle is too big, just as the unleaded nozzle necks down a mm or 2 in diameter, and the car's little flapper-door hole is proportionately smaller too, so that the leaded nozzle wouldn't fit.
This is the type of measures that they took to prevent people from putting in the wrong fuel, and the lack of this is what i'm asking about with E85. If using it in the wrong vehicle could cause such problems, you'd think they'd take measures to counter human error. Just curious here, if I'm allowed to be. Maybe the fuel industry is in cahoots with mechanics and tow truck companies. As for the actual reason that leaded "shouldn't" go into an unleaded vehicle, that's another issue (apparently a hot one for some). Brian David wrote: There's nothing really stopping you from putting gasoline in your diesel car, or diesel in your gasoline car, except common sense.
