Does anyone know if it is OK to transport camping fuel in checked luggage? I am talking about the MSR threaded top bottles.
Whoa!
Do NOT take any fuel on board an airplane in checked luggage or otherwise.
In fact, let me know what flight you were going to be on so I can stay away.
I'm a pilot and I'd have you tossed off the flight in an instant, TSA or no.
At altitude, in an unpressurized or low-pressure cargo hold, there's a good chance the fuel would leak out. One spark, and BOOM.
Please don't even think about doing it. Buy fuel at your destination.