How often do you change your oil

[lew600fazer]

You lot don't half waste some money! I do mine 'about' every 6k miles. That's as yam say it should be done, but if you go over for a thousand, don't worry (unless your under warranty). It's not going to self destruct at 6001 miles!!
And changing it early isn't going to do the bike any favours, or rebuild worn bores.
After a lifetime in the engineering buisness, metal is metal, rub them together and they will wear, it matters not about oil types, viscosities, age, and mileage is almost irrelevant.
Just change it at 6k (ish) and don't panic about it!

That is the idea of oil so you do not rub the metal together, there is a film of oil between the two moving surfaces, it is called an oil wedge. The most wear and tear on an engine takes place on the start up as the system is not instantly pressurised. On a lot of larger engines there is an oil priming pump which keeps the system pressurised and therefore maintains that film ofv oil between the bearings /crank journals and cylinder walls.
Life time in Merchant navy marine Chief engineer.
But I do agree changing the oil early is wasting money. Only thing I would say is if a bike has been sitting all winter and not run I would change the oil come spring time as there will be a certain amount of moisture will have got into the oil.