Just had my radiator replaced on my daily driver car. Now the temp gauge is running right of center. Not extreme, but not like before the change of the radiator. Radiator shop stated they flushed the system, (I wasn't present), then added new coolant. I did return to the shop and a laser gun with digital readings pointed at all hoses, shows no over heating. They said it was probably the guage went bad. I have a hard time with that one, although its possible. First thing I think of for me to do is drain coolant and add my own. Second new thermostat. Third possible sending unit.
Any suggestions?