So recently I’ve been noticing when i leave in the mornings for work after letting my truck warm up, my coolant temp is never past 165. No matter how long I let it warm up. I Was hauling my horse trailer this morning it was 34° And the coolant temp never reached 190. Maybe touched it once on an uphill but otherwise no. Is this a problem? Stuck thermostat? 

  On 2/4/2020 at 8:39 PM, 98whitelightnin said:

Mike, tracking shows that t-stat delivered yesterday. I sent it in a very discrete valentines day padded envelope.

Ummm... Not seen. Eileen was home all day unless its in the mail that my neighbor picks up. I'll look today.

 

As for returning back to the oil temp the lowest I got was running +2*F outside, winter front, and the oil temp was 162*F and so was the oil filter measured with IR gun. On the way home in 40*F weather it was 171*F maxed out climbing 6% grade. I've even bumped the timing up trying a tweak in my winter tune. Coolant still running 192*F to 195*F constantly. Double check and triple checked that temperature is absolutely correct. The only thing I can say is this is the oil AFTER the cooler. Being the radiator on the suction side is cool to the touch. But yes that temperature shown by the Quadzilla is 100% correct.

 

I sent it to 5525 US 95. Let me know if you dont get it and ill run tracking to find delivery location.

Got it... Neighbors doing there job. So CUTE valentine package...