Mine's almost 50k km and doesn't use any oil at all, so there's a problem somewhere. I would agree with Jens. It's very hard to get the oil level exactly right, and it will burn any excess (or pump it into the air filter box), which may be what you are seeing.
There's a lot of info on how to do it on this site, but roughly:
1. Get the bike fully warmed up and give it a thrash round the block
2. Stop the engine and allow to rest for approx 5 minutes (this lets the circulated oil settle down)
3. With the bike vertical, check the oil level. Just rest the dipstick on the edge of the hole, do not screw it back in. The oil level should be somewhere in the hatched area of the dipstick.
An ideal time to check the level is after fuelling up in the middle of a trip, when all these conditions are satisfied.
I overfilled the bike for months until I got hold of a manual and learned to do it right. Now, the oil level doesn't vary more than 1-2 mm between changes.
|