Why you need $11 infrared thermometer.

[DreamV4]

Infrared thermometer makes diagnosing cooling system very simple. Overheating engine, thermostat, fan switch, clogged radiator.
I guess, it is infrared, there is no description. Handgun type for $20 would be better probably.
https://www.harborfreight.com/non-contact-pocket-thermometer-93983.html

 

[02GF74]

That's too much.

I have one similar to the one below. Makes sure it is not a body temperature meter.