2006 RTL, 78k on the clock and oil in #4 cylinder- I have read some other threads on this issue. Started with a rough idle, check engine light and fouled plug. CEL is off now, but roughness is beginning to return, (granted, it's -5F here right now). After all I have read, I'm just wondering if ultimately the final answer will be an engine replacement or if there have been issues like this resolved by a new head and gasket? It goes in to the dealer tomorrow for repair. Pretty disappointed that a Honda motor with 78k might need replaced.