Join Date: May 2007
Location: Merseyside, Great Britain
If it was in the circulating oil I'd be worried, but that's what the filter is there for. I changed mine at 600 and 4,000 just as I do with all my bikes, my R1 is showing over 52,000 now and runs just fine, my 636 is on 20,000 and sounds like new. How many bikes will end up in the breakers before they get engine trouble anyway?
I don't think it would make any difference to Kawasaki if they recommended a 50 mile change, but they offer a warranty with a 600 mile change so I imagine the bean counters are convinced there aren't going to be many claims.