1993GMCC2500SLX
OBS Enthusiast
I don't have a infrared thermometer gun, but I have been looking at the be cool Thermo cap anybody remember these they had a built in temp gauge on the radiator cap?!
Loopy idle
- Thread starter Texvet
- Start date
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someotherguy
Truly Awesome
The IR temp gun will serve you better in the long run as you can use it on a whole lot more than your coolant temp. 
A decent one will set you back around $100-$200. Don't know if I would trust any no-name ones for less. You could save some bucks by getting a used one, I suggest Fluke, just choose carefully and get one with a useful range to you, and read the descriptions and seller feedback carefully so you're not buying a dud. The Fluke 62 mini I've owned for 20+ years still serving me well. Their replacement for it, the 62 MAX, lists for $110 direct from Fluke with free shipping. The 62 MAX has a range of -22F to 932F so it's good for a lot of automotive stuff except maybe extreme catalytic converter failure diagnosis, since those can run up to 1700F in normal operation. They could easily get much hotter if the mixture is off..
Richard
A decent one will set you back around $100-$200. Don't know if I would trust any no-name ones for less. You could save some bucks by getting a used one, I suggest Fluke, just choose carefully and get one with a useful range to you, and read the descriptions and seller feedback carefully so you're not buying a dud. The Fluke 62 mini I've owned for 20+ years still serving me well. Their replacement for it, the 62 MAX, lists for $110 direct from Fluke with free shipping. The 62 MAX has a range of -22F to 932F so it's good for a lot of automotive stuff except maybe extreme catalytic converter failure diagnosis, since those can run up to 1700F in normal operation. They could easily get much hotter if the mixture is off..Richard
A radiator cap with a thermometer built-in is almost certainly a Chinese import. Might as well buy a real temp gauge rather than reading temperature on the cool tank of the radiator.
When I went shopping for an infra-red "Temp gun", I selected a Mastercool unit because it was the only one in my price range with adjustable emissivity control. It's ability to accept "K" thermocouples is a bonus.
www.amazon.com/MASTERCOOL-52225-Infrared-Thermometer-Laser/dp/B000OCKHGQ
When I went shopping for an infra-red "Temp gun", I selected a Mastercool unit because it was the only one in my price range with adjustable emissivity control. It's ability to accept "K" thermocouples is a bonus.
www.amazon.com/MASTERCOOL-52225-Infrared-Thermometer-Laser/dp/B000OCKHGQ
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