Relative humidity and engine cooling

[scottm]

Originally Posted by landtank

since when do we care how well an 80 cools at 10,000 ft?

True that, the Super80 needed little cooling at over 30,000 feet. Temps drop at about 3-degrees C per 1000 feet if I remember right.

[turbocruiser]

Originally Posted by scottm

True that, the Super80 needed little cooling at over 30,000 feet. Temps drop at about 3-degrees C per 1000 feet if I remember right.

Big difference between 30K and 10K and I know that at 10K and on steep slopes when I'm really pushing the rig the cooling system is working pretty damn hard. In fact with my stock rad I used to run the hills with the heater on full just to help the system out some. Anyways, wasn't this about humidity to start with?