According to the MSDS report on Nitroil, it as a flashpoint of 110 degrees F....does that mean it can spontaneously combust when its hotter than 110 degrees F .................contains 78% nitromethane and 22%oil
http://klotzlube.com/tech/KL-601.pdf
http://klotzlube.com/tech/MSDS%202004%20KL-601-1.pdf