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Flushing '79 460 cooling system with detergent

 
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Old 04-30-2017, 08:58 AM
Number4
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Flushing '79 460 cooling system with detergent

my new-to-me '79 F250 recently got a new radiator (and water pump, hoses.) the liquid that came out was dirt brown and appeared to just be water.

with the pump off I flushed the block with water and compressed air and back flushed the heater core until all the water was clear.

a radiator shop recommended running a cup of old fashion laundry detergent through the system. I'm assuming with just water?

anyone do this? I don't like the idea of running straight water again. Do it with antifreeze?

anyone have experience doing this?
 
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Old 05-11-2017, 10:57 PM
wtroger
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Detergent won't hurt anything. I don't think the rad shop expected you to run this mixture full time. if weather is warm run it for a day or so flush air out and then do your antifreeze mixture.
 
 
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