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Old 07-03-2013, 12:28 PM
barry12345 barry12345 is offline
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Join Date: Oct 2012
Posts: 5,924
If the hose is as hard 8 hours after shutdown as when the coolant system was hot. You most likely have a crack.

Nothing is absolute though. Rad sealer will not in my opinion be as effective as the water glass no matter who sells it under any name in your situation. The pressure keeping the hose hard when the system is cool is combustion gasses.

My money would be on a crack though of course it can not be certain without examination with the head off. Sure you may have other leakage. The principal issue is that anti freeze was found to be present in the oil. That is not a good thing.
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