Originally Posted by
Evoking1230
Sooooo, are these really necessary for Nitro or just in colder climates and to break in an engine if you heat cycle it?
"Necessary" would be a subjective thing. It definitely prolongs the life of the engine since there's less wear on the internals when the engine runs at operating temperature. It's also easier (sometimes much easier depending on engine and temperature) to start it.
So it's not necessary per se to use a heater to start or run your nitro engines, but with the heater your engine will most likely run right off the bat and will also most likely last longer.
At least that's how I see it.