Call me naïve but it's
Call me naïve but it's amazing to me that a carmaker can produce an engine that needs routine head gasket replacement and still have a loyal following. What are Subaru's engineers doing that they can't figure out why the head gaskets blow and modify the design?
Back in the late '70s when Honda first started selling their Civics and Accords which were both very small, very inexpensive cars, the Accords started blowing head gaskets. Honda found out the head bolts were stretching, modified the head bolts, and for owners lucky enough to take their car to a dealer instead of an independent shop, found out Honda would pay for the repair.