Re: BackFlushing Radiator and Engine
Reread you post again, did not really directly provide direct answers. Especially on older radiators I know of couple of people that have ruined a radiator backflushing using a garden hose at house supply full pressure.
I prefer treatment where the treatment is in the system and driving the car, and low pressure backflushing with the garden hose turned down.
Others may be able to provide safe ways of using a pump.
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