Once a year i change the engine, gearbox and bevel oil, oil filter, air filter, brake fluid and strip the calipers, mainly because there is so very little else for me to do to the bike - which then means there' practically nowt to do for the rest of the year because i've changed everything.......so i have to wait another year before i do it all again.
Never imagined a 17 year old bike could be this reliable.
Funnily enough i looked at an old Z1000 a few days ago and thought about buying it, i don't need it for anything, it would be my take it apart and rebuild it stress relief toy