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mrjones

radiator leaks

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I have a 99 yz400f, and one of the radiators is leaking. Does anyone know if it is okay to put a stop-leak kind of substance into the radiator? Is there something made specifically for motorcycles?

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Do not put stop-leak in them. There are a bunch of companies that specialize in motorcycle radiator repair or your local radiator shop maybe able to fix it.

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Local radiator shop. I twisted one and smashed the inner two rows of fins on the other, radiator shop tested and fixed leaks. Never had a problem after that. Ironically it was a 99yz400 as well.

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