Ok I cee , I been lazy with my bike as well but !!! Still haven't swapped the forks back .

Added 300ml that bought the oil to the top of the window then rode the 280+k, looking at the window with the bike on the level now the oil is above half but well under the top of the window. I have not measured the oil coming out but it sounds like a good idea. I will keep u all updated.

Righto, so you are overfilling the engine. The manual states that you should only fill it half way up the sight glass when cold, with the motorcycle upright on a horizontal surface.

Overfilling the engine can cause it to push oil out the breather and into the airbox, which then gets sucked in a burnt by the engine.

I suggest you have a read of your owners manual, follow those instructions, fill it half way up the sight glass and ride it to see if it continues to burn oil.

Hopefully this will fix it. Let us know how it goes after a couple more rides.

I don't even look at the window and just add the 1200ml as directed by the berg manual. 280km is about 10hrs so mine gets changed then.

Thanks to all for the help. I have re checked the manual and the level required cold is half full in the window. Warm the level is between middle and top of the window without an actual level given. Looks like I may have been putting a little too much in burning it off.
Thanks again to all for your thoughts. I think from now on I will be measuring and not relying on the window.

I didn't even know mine had a window for the first month or so

Hopefully that will sort it. Great bike!

The measuring technique is great, but only if you drain the exact same amount of oil out each time.

Scenario 1. You remove your sump plug when your engine is hot and you let it drain over night. You also remove and clean the screen which allows the last 50ml of oil to drain resulting in the entire 1200ml drained.

Scenario 2. You remove your sump plug when your engine is cold and you only let it drain for 2mins. You don't remove the screen. You only drain out 1150ml.

Using scenario 1, adding the 1200ml should work out perfect with the oil level half way up the window. Using scenario 2, you may still have 50ml of oil left in your engine, so adding the 1200ml would mean you have 1250ml. After only a few services, you engine oil will be overall and you original problem will return.

The oil level sight glass is there for a reason. USE IT !!! Just only fill it up to the recommended level.

Thanks Dave. All my changes are done the same way but see your point. Happy to stand corrected

I just add 1 liter -what I spill !