I just ran our new Custom Weld Storm (350 carbed closed cooling system) for a couple of hours (momentary wide open followed by steady varying rpm's 2800-3400) and the water temp was about 150 degrees on the gauge. I have ran outboards most of my life and I am VERY new to the operation of inboard jets and want to hear from others about whats normal and not so normal. It initailly blew some coolant out(to the overflow tank) after it warmed up then it seemed to stabilize. The next day when I checked the coolant level in the heat exchanger I ended up adding about half a quart of to bring it up to the proper level. Is this normal for a new engine?