Working on a guys 2012 ZX14R with 23k miles and checking valve clearance and he said the last owner may have very likely not changed the oil for way to long.
Just curious if others notice the same thing on their 14's or if perhaps this wear could be attributed to the 1st owner.
Thanks in advance.
NOTE: The blue shows up stronger in some of the photos then it actually is. The lobes do have a blue tint, but not royal blue. More of a blue/gray...