Like I mentioned, not looking for a "long and boring debate" on brands or weights. Just an observation if in the "long run", does it really matter?
Would an engine failure occur regardless of using the spec oil that Honda recommends or "upgrading" to syn?
I assume the engine tolerances have not really changed otherwise syn would be required.
Point is there are many 1800 motors out there well over 100k miles that surely never ran syn.
Just an observation.
Maybe I should have simply asked, "which do you run and why?'