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How much stop-leak is too much?

I have tried the recommended dosage of stop leak (1 bottle) on my heater core with no improvement. I heard the Car Talk guys the other day tell someone to use tons of the stuff to fix a cracked block, but I wasn't sure if that was just a last resort or possibly sarcasm. I know virtually nothing about cooling systems. You have to worry about clogging the radiator, no? Is the pepper thing any less risky?

Another bottle?? Or five...

Thanks

(1978 245--exactly like the one at the top of the screen but without "SEARCH" written on the side)
--
Phil Aupperle, Brooklyn, NY: "Tomato Juice" '78 245 200K






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New How much stop-leak is too much?
posted by  TJ718  on Tue Dec 18 05:56 CST 2007 >


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