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>

You will always want to run a hot glow plug it is easier starting on your engine. A hot medium or cold glow plug will not make your engine run any hotter or colder the cold plug will have a thicker element on the inside wich will not it heat as hotter therefore a hot glow plug has a thinner element on the inside which will allow the glow plug to get hotter which will make your car easier to start. So there will be no need to change the glow plug because the temp has changed outside.

What you just explained is actually what I was thinking as far as being easier to start and possible maybe even idling better with the Hot plug so thanks for the great info and for the confirmation on this question.

DANG.....! I'm glad Ifound this forum and everyone I've had communication withso far has just been great........

Thanks again, ShanG.

Your welcome as always!!!!!!!!!!!!