Redfish is correct,those infrared guns are terribly inaccurate.
...temporarily install a quality gauge and then you'll know what
temperature you're operating at.
Thank you. Excuse this brief hijack. In servicing these gauges the first and deepest thorn in my side was "bend the little thingy". I dealt with that as best I could. Then this infrared crap came along. I took my website down. I give up !
Happy moparing to all