2017 Ram, had a coolant leak that sprayed coolant everywhere. The garage pressured the system and the leak was coming from the thermostat housing, a leak around the bottom of the stem. It had rusted through the housing. Rust in the radiator, and hoses. This is a 2017 Larime with 77500 miles. Mechanic said the antifreeze, which was orange had rusted the entire system due to a reaction with the electrical components. He said that General Motors had diagnosed this problem years ago and no longer us this type of coolant. Bottom line, your goose is cooked. No amount of flushing the system will remove the rust from the system or the components. If this is gospel, not much you can do other than sell, trade, or come up with something original. I do not have inside contacts that can shed light on the veracity of the information. But this system is rusty as hell. As the VP once said, “I saw it with my own eyes”.