Has my fuel gone bad
 

I left 1/2 a bottle of 30% nitrotane in my car and it got warm during the day - the top of the bottle pressurized and the cap flew off when I opened it - can I still run the fuel?

It is usable...If you are hesitant, use in for practice and get a fresh gallon for racing...The bottles probably go through hell during shipping during the summer so you shouldnt worry too much...