thanks for answering my questions ron! heres another

I have some traxxas 20% nitro fuel, and it says on the can that it is made for .15 engines (theres a .15 on my hammer) and on the back it says "do not use in boat and airplane engines". so i called up my LHS and they said that it was ok for me to use. what do you think? i just want to double check. thanks.