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Message: [QUOTE="6.7 Powerstroker, post: 1496558, member: 25084"] I've noticed recently my coolant in my primary keeps getting low, about 3 times now in past couple weeks I've added some to get it to the cold full line. So I took it to a diesel company near me that seems reputable and they looked all over and of course found no external leak. They then took a large clear tube that had a stopper on one end and clear fluid in it and jammed it into the cap opening. Then cranked up the truck and revved it to about 2500 rpms for a minute and nothing. Then held it at 3500 for about a minute and a very small amount of bubbles started trickling and then let it idle for a few seconds and it continued trickling a small amount of bubbles. Then he cut it off and said it needs new head gaskets. I asked if he was sure and he said it couldn't be anything else so now I'm not so sure I believe him. I did recently change my intercooler for a new one I picked up and I had it painted black. After calling Lead Foot Diesel, since they are about an hour and a half away, and they seem to think it's the intercooler since they've only seen 2 6.7's with blown head gaskets. Anyone seen a 6.7 with a blown head gasket and know what I should look for? I really don't get on it that much and never race it so I wouldn't think blown head gaskets would be possible. I also just sent out an oil sample to see what the condition of the oil is. [/QUOTE]

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