| Bike serviced at 6000 mile or 1 year intervals whichever is sooner (and I always change the cam belts). Oil is as installed at the dealers only had to top it up once in 5 years between services. Bike was used daily now used twice a week, always run it for a minuite or so whilst putting on gloves etc before riding off.
I think that even synthetic oils can only cling to camshafts etc for a limited period of time and many bikes are not used often enough and the oil film fails on start up. sigma performance have a very interesting article on the oil supply to the rear head on 4 valve engines on their web site.
dave |