For those who monitor coolant pressures.....
Curious for feedback for those who monitor coolant pressure. I towed my 8000lb camper about 180 miles yesterday on highway 36 from Hannibal, MO to Kansas City, MO which I would say is fairly hilly terrain. Just idling in camp ground my coolant pressure was up to 7psi. By the time I was 10 miles down the road I was between 12-14 psi. I was struggling to keep speed at even 60mph. All temps, EOT/ECT are good, 6* delta regularly and never more than a 8* delta and oil temp never over 220. So, I pulled over and pulled the Degas bottle cap off obviously taking coolant pressure down to zero. Then, towed the rest of the way home and coolant pressure didn't go past 9 the rest of the day(150 miles).
Also, I'm just not impressed with the power I'm getting, I just think towing 8000 lbs should be easier than it is with my truck. I can't maintain speed 65/70mph without the tranny kicking down to 4th TC locked or 5th unlocked.
My buddy thinks I'm dealing with pre-blown head gaskets and they just aren't bad enough yet to make my coolant puke or be drinking it.
Side note, my EGT's were sitting at 1000 almost all day unless going down a hill and would get down to the low 900's before coming back up. The truck also shifts out of 5 converter locked before it hits 1100 degrees.
Anyway, sorry for the long post, frustrated with how my truck is towing and wanted to see if my pressures are similar to what you all see.