I'm no expert on this kinda stuff but. . . im guessing that the gas stabalizer might be just a bit stronger than the diesel kind. If its only in the tractor tank, I would roll with it. I have used regular dry gas in the diesel tank when water is a problem, (like when the operator forgets to put the fuel cap back on in the rain or snow. I seem to do that a lot!)
If it would made you feel better, suck it out of the tank and cut it with more fuel. Whats the worst that can happen ? and remember "Its only money!" . . . John