6000 miles on my 996-which Fordie now has and needed 2 rockers at 18500 miles, 6000 mile oil changes using Shell Advance.
22,000 miles so far on my ST4S (same engine)-no rockers-yet. 6000 mile oil changes, Shell Advance, always warm the engine up before riding for about 2 minutes-basically enough time to-remove glasses, put earplugs in, put helmet on, put glasses back on, put gloves on-works for me.........
John