I idle in the Summer and the Winter... if I don't, I have no A/C or Heat. I don't set it at "hi" idle, just a 50 or 75 rpm adjustment to take the injectors off the "idle" circuit.
![Image](http://i35.photobucket.com/albums/d197/sass93/Trucks/42622/XMas2012-2.jpg)
On the diesel p/u, if I don't let it warm up when it dips below freezing, the trans, power steering, & brakes are a little sluggish. The best invention are the heated seats in the dually... run outside, crank it up, turn on the seat heaters, dash back inside!
The wife's p/u is gas, and warms up much quicker! On 'em all, I tend to let the water temp get to at least 100ºF before I drive. The wife complains that I purposely didn't order her p/u with heated seats... I have to remind her that she's hot enough! It pleases her I can still say that, but I don't think she really buys into it!
GunnyMack, 10 minutes ain't a long time, and that's usually long enough to move the fluids enough to get them circulating properly... My big Cummins idles @600rpm at its lowest setting, 800 at high idle; if I'm idling for long periods I usually set it between 650 or 700.
OldWin wrote:That B.S. about not warming up your vehicle is a load of garbage. Might be true if their idea of cold is 45deg. Trust me, you light er' up and drive away at -10 every day and your transmission, crank, and rod bearings wont be long for this world. There is no greater threat to anything mechanical than cold...
Other'n heat, you're right!
![Twisted Evil :twisted:](./images/smilies/icon_twisted.gif)