160 vs 180 thermostat

RustyRatRod said
You have it now so that when the t-stat opens it never closes. They are supposed to cycle. Your mileage will likely suffer. Computerized engines are designed to run "whatever" thermostat they are listed to have. Differing from that can have poor driveability results. Lastly, if the engine does not get up to proper operating temp, you'll never get all of the contaminants out of the oil. Don't take my word for it. Look up something with a 6.4 in it and see what temp the fan kicks on. A lot of them kick on at 220 even 235. They are designed to run that hot.

But they pull timing when air intake temp reaches 117-120 deg, and or coolant temp hits 240.....im also tuning it with HP tuners, so its not really designed to run that hot anymore, i know they run them that hot to burn cleaner for emissions.....i drive in some heat, i dont want it runnin 20-40 deg hotter than thermostat rating when runnin down the highway....isnt that more when thermostat is stayin open?
And for the oil, i runnin an oil thermostat, that keeps oil temps up....
I get average 20mpg.... hot doggin included