We don't fly a lot. I just take cash back. The radiator does work seriously well, I'm happy with it. When we get to Arizona, I'll decide whether to put the 192 degree Motorcraft thermostat back in.
It was overheating too?
If so are you sure it wasn’t just gunked up with 20 year old antifreeze goo?
I drove a fair number of 6.0no trucks back when they were new, in AZ of all places for a couple years, didn’t have cooling issues. Maybe lucky?
The truck has 80k on it. When I pulled the valve covers to do the injectors, it was spotlessly clean inside. This engine has had regular oil changes. It has had the EGR system deleted and a straight right up pipe installed. I suspect due to the cleanliness of the engine, the oil cooler may have also been changed. The oil and coolant temperature gauges show the same temperature which is what you want, indicating a clear unclogged egr cooler. The heater core could also be clogged with contaminants. The old smaller radiator was clearly heavier than the new larger 3 care aluminum radiator. My presumption is the weight of the old radiator was from crud built up inside. So far, results are impressive.
The weight difference is because it’s aluminum. Assuming you did not verify it was “gunked up.”
The oil and coolant temperature gauges show the same temperature which is what you want
everything I read put out by ford says the oil temp should be 15 degrees above the coolant temp. if there is no difference then something isn't working as the coolant is suposed to be cooler than the oil so it can do its job and remove heat. I think you have an issue with that motor that you have missed or danced around. first thing I would do is check the overflow cap and see if it is still good, maybe throw a new one on if it is old for the heck of it. then I would do a test to see if you have combustion gasses in your coolant.
I have read, if you see a 10+ degree difference, you need to swap out the oil cooler, I've read the temperatures should be close to the same when the oil cooler is unclogged and functioning properly.
