Ilive in central Texas where it is ++warm to very HOT spring, summer and early fall which is when I'll be running my Backdraft 3.5 Buggy the most, but I will be running it in this cooler time of year as well so Ineed some good advice on the best heat range of glow plug to be using now, and do I need to cool it down notch when it gets real hot out?

I want to use what will work the best and at the same time be the easiest on my engine.

I'm looking at these

<font color="#000000">O'Donnell Hot (Red) Sport Glow Plug (5%-20% Nitro)</font>

O'Donnell Medium (Purple) Sport Glow Plug (25%-30% Nitro)

<font color="#000000">Dynamite Platimun Series Standard Glow Plug (#4 - Medium)</font>

<font color="#000000">Dynamite Platimun Series Standard Glow Plug (#3 - Hot)</font>