I'm not sure - I was used KNO3 and sugar to make rocket fuel when I was younger, it makes smoke bombs if too much sugar, but I figured fine KNO3 at the right co

I'm not sure - I was used KNO3 and sugar to make rocket fuel when I was younger, it makes smoke bombs if too much sugar, but I figured fine KNO3 at the right concentration with fuel oil would create an explosive. You still need a primary explosive and detonator though. Is KNO3 + Fuel Oil different than the usual NH4NO3 "AN-FO" bombs?