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

Flashpoint is where the liquid can form an ignitable mixture with air and is able to combust from a source of ignition such as an open flame, spark, ember, whatever.

Yep, its the temperature that the liquid starts giving off gasses.

Gasoline has a very low flash point, something like -40 degrees while diesel is relatively high, somewhere around 150 degrees or so if memory serves.

Notice you don't see cars exploding when its over -40 out

Flashpoint is the temperature the liquid needs to have to give off enough vapour for it to be ignited by some external source like a match. Once those vapours have been burnt the flame goes out.

Firepoint is the temperature the liquid needs to be at to give off vapours at a rate that will sustain a flame once the vapour has been ignited by an external source.

Autoignition is the temperature the liquid needs to be at have enough heat that no external source of ignition is needed to ignite the vapours.

ok thats makes sense now, ..................... i was just curious