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Message: [QUOTE="webb06, post: 1554290, member: 7680"] Got 2 trucks in our shop that are using coolant. Have pressure tested both trucks and there are no external leaks found. One is a 2011 other is a 2016. Both company trucks that do a lot of hauling and highway driving. Both trucks are dleted, both exhaust and egr. Anybody seeing headgasket issues with tuned work trucks? I’ll probably hook up our pressure gauge and take each for a cruise and see if they build pressure soon. Neither appear to be puking though. I’ve seen instances of heads cracking inside the intake runners causing coolant consumption. But the 2011 had heads replaced last year by their company mechanic. May require tear down to find the cause. Each are using 1 gallon every 1000 miles or so. Sent from my iPhone using Tapatalk [/QUOTE]

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