Mass 6L owners, what are your coolant temps?

[Double 6L Trouble]

Trying to figure out whether to change out the t-stat or not. It's been between 28-36 over the past week and I've been running 172 on the ECT's and 176 on EOT. What are you running?

[diablos30]

depending on the temp, im high 180's to low 190's for both oil and coolant

[roadrunner]

Once up to oprtating temp my truck holds 191f, from the temps you posted you need to change-out the thermostat

[NYC F-350]

ECT runs darn close to a steady 194, EOT fluctuates from 194 to 200 empty... hit 204 dragging a trailer down the Mass Pike out by Sturbridge going up those hills at 75 MPH.

I recently moved from Hampton, NH to NYC and have been driving back and forth quite a bit.

[Double 6L Trouble]

thanks for the replies guys, definitely sounds like it's T-stat time. Hopefully I'll get a bump in fuel mileage too. Ever since the dealer reflashed my computer the mileage sucks!