So at 123,000 my beloved Blue Oil Burner has started burning significantly more oil than it has historically. It burns approximately 500ml per thousand miles now which is up from around 200 in the course of one oil change. That seems rather sudden to me and it seems to be getting worse but I'll only be able to confirm that with some more miles.
The bike smokes on deceleration which implies valve stem seals.
mentioned the possibility that maybe the formulation of Mobil 1 15w50 has changed somehow creating my consumption problem. 15w50 is becoming harder to find and the consumption has started since the last oil change so ... maybe? I haven't been able to find any mention of it searching on google but I may not be using the right search terms.
Otherwise the bike seems to be running perfectly. It pulls strong. It gets good mileage. It smokes a bit black on full throttle high RPM acceleration and blueish on deceleration. ( buffalo
, is that correct?)
For starters, I plan to do another leakdown test on it to see if anything has dramatically changed. If the numbers come back somewhere close to where they were the last time do I:
- just run it and keep adding oil?
- run some other thicker/high mileage oil?
- do the valve stem seals?
- pull the head and have the head gone through?
Some have suggested that now it's finally time to get a new bike.