so last trip thru the Kentucky mountains for hours produced very high temps for the oil, water and trans as the engine never really got to cool down before we hit another mountain. This was worrisome to me pulling 15,000 lbs. Got home and did some research and found this lower temp thermostat for the 6.7
Watch this, this guy is not pulling as heavy so his temps will be lower but the comparison is the same.
Ordered this up and this trip thru the mountains in Kentucky ( by the way we made several stops along the way and found the people there are very friendly, not like the ones around Washington D.C. where I live. Anyway I noticed the temps on all the gages ( I use a Scan Gage I can monitor everything at a glance) was much lower generally and don`t worry about it any more.
The install took 15 minutes and was easy for any one with basic tools and just a little mechanical knowledge. The Sinister Brand thermo has a better reputation on the Ford truck Forum board and a little more expensive but proven to work.
More reading on the subject
https://www.powerstroke.org/threads/...uling.1289514/
Ford says this is normal themps under high stress. I don`t agree and changed all fluids out to full synthetic, oil and trans and "Cool It" in the water, all this seem to help.
more reading
https://www.ford-trucks.com/forums/1...ting-temp.html
__________________
2018.5 3791 Rear Den Montana, on the lake
no 3rd A/C, Mini Split, just do it
Electric Brakes
..... Disk Brakes, it`s the only way
F350 Ford Dually 4:10`s w/bags (payload 5595 lbs) Sumo Springs 63 gal aux tank
Reese Goosebox Mor/Ryde SRE 4000 X Factors Monroe shocks.... real smooth ride