Hello all, I have a 2018 DL250 at 2500 km that vibrates between 5k - 6k rpms and between 8500 and 9500 rpms. (other owners do not have this problem so I am not accepting my experience to be normal small engine vibration)
I am working through possible "causes" of vibration.
I am wondering if oil level could be a cause for vibration at confirmed, specific, repeatable rpms.
I noticed that the sight glass for oil level control shows the oil level to be within the high and low levels. The level is slightly lower than the "center" of the sight glass.
I have been warned not to operate the engine over or under filled. I am seeking feedback on if an oil level closer to the high level could have an effect on engine vibration.
What are you informed thoughts?
thanks.