I wnet out today and was going to switch fuels. from top fuel 20% to trinity plantinum 30%, and it wouldnt start when I changed them. I first ran 2 tanks of the old stuff and then went to switch and it ouldnt start.

I heated the engine up with a hair dryer and still would not start up.

can it be that it is too cold to switch fuels.
if so should I wait till I get to the track to switch fuels?

thanks, kevin