The best way to monitor the engine and compartment.

[WEC4104]

I have wondered about the idea of a "coolant pressure alarm".  Of course, it would be in alarm during initial warm up, but might be the first indication of a major coolant leak.  What'cha think??

If what you are concern with is a leak, wouldn't a coolant level sensor be more appropriate? (I've owned cars with coolant level sensors, but can't recall one that sensed pressure.) That would seem to be less affected by altitude, and engine temp.