Partially true fozzy, but sometimes I'm still at 200 after a climb into a rest area or out west in the summertime. I usually kick my engine fan on at an exit ramp though, and it usually is plenty cool by the time I pull in.

Are any of you guys opening the hood to help the cool down? I've seen people do it with VW's

The best way to do it is find someone with an empty reefer. Pull up behind the trailer with the doors open and fire up the TK, put the engine fan on and kick the idle up to 1200 rpm.. Cools that baby down in no time I tell you. :lol:

On My GMC Typhoon I used to open the hood :) The KW engine fn does a great job though

A time for new thermostats maybe? :lol: I usually keep my engine at 150degrees and around 170 on a steep climb with the engine fan on.
200 is just 50 short of overheating on a freightliner.

I run around 150-170, but on a long western hill, I hit 200, but never more. My KW is tip top, except for the front fender, but Teal can share that story :)

150-170? That's a bit cold. I'd check the thermostats.

Mine won't go below 190 no matter what you do with it. Even when it's -20 out. That is normal operating range.

Anything below 180-190 you're accelerating wear on the engine.

The point of idling isn't to get the water temp down, the engine doesn't care what the water temp is. It's 100% about the turbo. If our engines didn't have a turbo, it wouldn't matter.

The engine does care. When metal heat up or cools down too rapidly, that is when damage can happen like cracking or warping.

That won't happen. You'd need to pour ice cold water in a hot engine for that to happen.

Simply cutting off the supply of heat(engine running) won't screw it up. There's enough tolerances in the engine that it won't hurt it.

Like I said it's all about the turbo, more specifically, the oil inside the turbo.

Look at it this way, idling a gas engine never cools it down. The combustion temps stay exactly the same, have you ever heard of anyone "cooling down" a gas engine?

A gas engine also runs hotter then a diesel engine(inside combustion chamber).

I learned that you always warm an engine up so that all the metal expands evenly in cars that have steel blocks and aluminum heads. I'm not refuting the turbo issue, in fact I support it as I owned a GMC Typhoon with a turbo bigger than the Rev's Ego and blows more hot air than him as well :lol:

The device described above about the car with the oil pump on the turbo car is called a "turbo timer" and has a few other neat features as well. i dont have one, but my buddy's supra.