What is the recommended product useful to DIY flush and clean the entire cooling system of a 5.4 motor? I'm re-routing a few heater lines and will be replacing all coolant before October, thought it would be a good time to run a flushing solution through the system.

FWIW this is for an E-Series with 5.4L motor although the body/chassis shouldn't be any sort of deciding factor.


TIA!