What is the water temp susposed to run on these things?
Since it's been cold (under 30), I see about 180 max and see drops down to 172 when decelerating. I'm wondering if my gas mileage is suffering, because it's not warm enough. I gained 1mpg with my 6.0 diesel with a new thermostat, when it wouldn't get above 180 and stay at 190.
Do I have a defective thermostat? or are these things cooler running?
Today's findings are after 3 miles it peaked at 188 then dropped to 177 in half a mile, and held til I came to a stop 7 miles later and it dropped to 168. Did the same on the return trip. Would only come up to 177 after a few miles.
Heater shure felt great at that 188, not so much at 170.
Update, put in a napa thermostat today. Went for a short 1/2 mile drive due to visibility. Had readings of 191-197 degrees. Not long enough to really tell heat output but should be way better than the 179 high I had going to NAPA. Will update if gas mileage also increases.