It does seem to be a quality control issue or design fault? or as someone said they are just consumables. Never the less you would wish to get more than 3700 miles out of a set. Good advert for Motul 300V fully-synth 15/50?
I know that the 999 has a redesigned engine but the principles are the same, are there any recorded failures of rockers on that bike yet?
Mood: Finally gotten over the 748R getting stolen thing. Actually, no i haven't !
I think oil is key if you can get past the idea that all "synthetics" are equally as good, they are not. Motul and Amsoil are Ester based lubricants which are in a differnet league from a chemistry point of view. Read up on the science of the film strength of these. Forget the marketing and read the science. And still change it regularly