Amsoil cetane booster is octyl nitrate, also called 2-ethyl hexil nitrate.

Andy this is extremely interesting. I wondered what high amounts of cetane booster would do as most things I've read said it has less effect with increased proportions(cetane number improves less with higher concentrations). I also read it is more effective when used with a fuel with a high cetane rating(cetane number improves more with similar concentration compared to lower rated fuel).

My local Amsoil guy is out of town until next week.

I also just found some info that says some Jet-A will have a cetane rating of 40 or higher, just like diesel. http://www.generalaviationnews.com/e...olumn&-nothing

Greg