On Mon, 28 Jan 2013 13:59:21 -0500, wrote:

Yea, I know they have cooling fins, but hey, people use them all the
time when the outdoor summer temperature is in the 90s, and the air is
still. Often they are just sitting at idle. How can they be getting
cooled properly? Yet they seem to last a long time in most cases. Those
find cant be doing much when there is no air movement, and usually no
fan either....

Are they built from stronger metals than a car engine?
Nope - usually crappy aluminum aloys

Then how do they hold up?