I gotta tell ya if you follow the directions on the QF 4.0 it will work. The bottle even has a temp strip right on the dispenser so you can see if the temp is in the range. I put it by my car heater on the way just to make sure it was right (along with taping the heat pack to it) and used double stick tape to fasten it to my undies. Make sure and shake it a few times before going in.
Hiyas Burnt, never did get a response from you but no worries I just saved myself the Franklin.
Hope it all works out for you.