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TY for that but what about the remove old coolant procedure?Yellow replaced Orange and is backward compatible. Here’s the bleed procedure:
Post in thread 'Heat not working'
https://www.fordraptorforum.com/threads/heat-not-working.87869/post-1701099
The draining procedure just states to open the radiator drain valve. The flushing procedure instructs to remove the thermostat and backflush the engine through the upper radiator hose.
