Join Date: Jan 2011
Location: Traverse City, MI
yeah, 4.2 quarts is a little too much. I usually use 3.5 quarts and prime the filter and im right at the middle of the oil window. I have an 05 zx6r, so your bike should be the same.
with too much oil, you can cause engine problems, and premature failure.
Also, check the oil level with your bike sitting straight up on level ground, not on the side stand. best thing to do will be drain some oil out or change it completely again, and add oil as needed until your in between the 2 fill lines. Good luck with everything.