"Sunder Was some of the water turning to steam at the bottom of the pan and riseing up turbulating the upper levels? This action placing the steam heat into the upper levels of the water?
Nope a test must be done under 16lbs pressure. You are going to force me to go purchase an upper and lower hose and a couple of sending units aren't you"

If I understand your comment "turbulating the upper levels", BJ, it doesn't matter. Even at 16 PSI in the engine coolant system, the water in contact with the hot metal surface may form water vapor (steam)which may not remain water vapor when mixing with the cooler water volume circculating through the engine block. Sunder's stove top physics lab is pretty good! <img src="/forums/images/graemlins/kewl.gif" alt="" /> Even though the measurements made are a little course, the difference in time between heating water and pure glycol to 140 degrees F in his experiment is enough to understand each medium's ability to absorb heat energy. If anything, it's true any steam formed in the water would quickly be lost to the atmosphere as water vapor, and be lost from the water solution; and therefore, would not be available in the water volume to warm the thermometer. But, where the water and glycol were only warmed to 140 degrees F, it is unlikely that any appreciable amount of steam was formed. It's a sound demonstration.

Good enough! And, Good for you, Sunder! <img src="/forums/images/graemlins/lol.gif" alt="" />