[Clydesvx]

I had the same problem mentioned in the first posting. I had the head gasket replaced and the problem returned abot 50,000 miles later. I ran a long while by notching the gasket on the radiator cap. That allowed the exhaust gas to blow off before it had a chance to overheat the coolant and fill the overflow tank. I opted for a junkyard engine instead of another gasket replacement. That worked well. If it happens to this engine I'll let Subaru do the work.