noddaz wrote:
My guess is this is the result if the car has not had the coolant replaced even on a semi regular basis.... Stick a hose in the lower hose opening and block off what leaks around the hose with a rag... Then do the same where the top hose hooks up. Yes, you will get wet. Drain what you can out of the engine, hook up the new radiator and refill with fresh coolant.
I did this with a Saab radiator I bought used.
First time I ran it, brown came out like crazy for about 30 seconds. Then it ran clear.
Then I reverse flushed it, and it ran just as brown for about 15 seconds. Then it ran clear.
Then I squirted some Dawn down the inlet and flushed it again. It ran brown for about 10 seconds. Then it ran clear.
Reverse flushed it again, it ran clear. I let it run until no more suds came out.
It was pretty fun actually. I was amazed at how much crap there was in there.



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