So. Your point?
If you would have had engine problems when the bike was new Kawaski likely would likely have denied the claim for using the incorrect oil.
That would hold true today on any new bike. People here who own C10s may have other bikes.
Now, any other problems?
I don't have a problem, strange you perceive that, but it's all with you.
Opinions that don't relate to the bike or aren't relevant to the topic don't assist those looking for help.
As for owners with other bikes - I'm one of them. But to get valuable information I go to websites specfic for that bike.
Have a nice day.
Regards, Russell