The original post was how hot os to hot? If it boils over every time you shut it off, its too hot. If it only boils over the first time, you had the system to full, do not refill after the first boil over and see what happens. 180 to 200 is not hot, 210 - 220 is getting there, 230 or more I would worry.

Its still a new engine, drive it a little more to break-in the cylinder walls. Do not keep adding coolant, let it seek its own level.

Did you get out on the freeway? or was this drive just around the block? Hood on or off? makes a difference in air flow.

Joe







1937 Chevrolet Inline-powered Streetrod