Forum Discussion
As always, glad you have something to fiddle with to occupy your time and you appear to enjoy it. But holy moly, sure is a lot of trouble and work and $ when there’s many brands and models of diesel trucks with none of these issues to worry aboot.
We were driving in the 85 to 90 heat at 65 mph yesterday and had no issues. I allowed the coolant temp to hit 196 before tuening the blue wire fan switch on. Had no coolant loss. Temp hit 200 a few days.back and there was.a tiny amount of coolant loss, not the big loss we got before the simple condensor installation. It is apparently helping a fair amount.
There are other items that could be problematic. The heater core may be clogged just as the stock radiator was and need replacing. It is also possible I need to install a new oil cooler. Not a lot of money, just time, I've got time and the ability. Buying this truck F550 4x4, in such nice condition with 78K miles for $20K, I can put a lot of time and money into it, and still be ahead of the game.
Yesterday at the Wayside Oasis, a nice gentleman was really interested in knowing about the truck. He bought a 2020 Chevy truck for 73K. He was amazed at my truck when I told him about it including it's troubles.
- Grit_dogFeb 27, 2026Navigator III
Someone bought a 6 year old truck for $73k? All that proves is that person is not well read about vehicle values. If you meant, new, 6 years ago, that makes more sense. 2020 was the first year of the non Allison trans (first year 10 speed). Maybe not the best for a first year major component change but I’d be interested to hear the “troubles” you told him he was “going to have.” You can hook n book any L5P, Alli or 10speed, with little to no worry about anything
I agree, it’s in beautiful condition, but there’s a reason my last 2 Cummins diesel pickups sold for 50% more than your purchase price, one with double the miles and the “bad” 68rfe and one with almost triple the miles and a G56.
Dealer got lucky someone actually wanted that F550, much less paid top dollar for it.- Camper_Jeff___KFeb 28, 2026Navigator
No, someone bought a new. truck 6 years ago for 73K
- Camper_Jeff___KFeb 27, 2026Navigator
I was lucky enough to be the first to see the add for the truck and put a down payment on it. The dealer said there was a frenzy of people calling and offering much larger amounts of money.
I now have about 5000 trouble free miles on the truck. I'll be doing an oil change out here on the road soon. Since the new 3 core radiator and other parts replaced/installed the truck has been performing nicely. I just checked the degas bottle for signs of coolant release from the other day when we hit 198⁰ going up a long steep hill in 90⁰ temperatures.