Question about my temp. gauge!!

BTW

Coolant temp and radiator temp might not read the same, manifold and head and block temps also.

Air moving over the metal of the rad might make the outside of the rad cooler.

Same for versions parts of the engine.


ALSO...

IR temp reading devices are sensitive to metal reflectiveness.

They are not so accurite on shinny objects.

Your temp pickups are located in the coolant flow, the coolant in the rad is only a percentage of the coolant flowing through the system unless the thermostat is fully open so the temp readings there might not be accurite either.

I would say that the closest you are going to get is the rad thermostat in the top of the tank in the coolant.

You don't need to accurite to withing 1/2 a degree of you are within +/- 5 deg your good.