would a coolant pressure gauge be useful? Update: YES!

[Maengelito]

FYI, i happened to be watching the busch race today. they were talkin about how dale earnhardt jr's car was loosing "water pressure" but they couldnt find any puddles when the car stopped for pit stops or any leaks under the hood. they hypothesized a pinhole leak in the radiator because it was a super speedway race so any debris they hit would hit at like 190 mph. i was thinking "chan was right with all this coolant pressure jibba jabba"