Head gasket on 2010 ISX 550
Hi there a friend of mine blew his head gasket at 190,000 miles. Number 2 and 5 compression rings let go. The shop says that all cylinders are at 9 thou protrusion. Spec is 7-14. They slapped a new gasket on it and bolted it back together. Is anyone else running into this? Any info would be great. He lost 15 days to this and is very un easy with the fact that they never went into a cause of why it failed.
Is this a worthwhile discussion?