Hi all,

Since the last 10.000 km I noticed a very high oil consumption, which seems to get even higher now. I used 200ml for 400km. I have read that 1 liter per 10k is quite normal, but my Tenere does use much more.

Today we clearly saw some blue smoke coming out of the exhausts during the cold start. There is not blue smoke when the bike is warm. I am not overfilling the oil reservoir and checking it according to the manufacturing instructions (warm engine, wait 2-5 minutes and do the measurement).

The airbox is not full of oil, there was some oil in the drainage tube, but only a couple of drops. This is normal and nothing to worry about as far as I have read on the forum.
I can see some oil on the outside of the tube near the air breather (see picture), but not enough to explain the problem.

Does anyone have an idea where this oil uses come from?
I have not been driving faster than 90km/h in the last 10.000km and it is really exceptional to drive above 5000 rpm. So this could not be the problem either.


Thanks for helping out!

Jeroen

Bike details:
Yamaha XT660Z tenere from 2010 with 55.000km
Oil: 10W-40, but driving in relatively hot weather