It's an Autometer electric gauge. I did not calibrate using a IR gun, but after Sunday I need to do that.
On the highway:
65* ambient, 180* water temp (intake manifold sender location) oil temps 140*. Cruise RPM 2500 at 75 mph.
95* ambient, 180* water temp, 170*-180* at same cruise as above, 210* at idle when radiator outlet temps reach 195*.
80* ambient, 180* water temp, 140*-150* oil temp at freeway cruise. Around town temps go up 10*-20*.
On track, RPM range typically 3000-5000, 6000 max. Valvoline 10-30 non-syn. Average oil temp 230*-240*, max 260*. Pressure would tend to fall with temperature so the oil type is an issue.
It was Hotchkis Track Day. Craig Boone with nice '69 car with a 415 SB broke his crank, and another guy pancaked the entire front suspension on his Mini C. OUCH!
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