I now have about 16K miles and at each oil change I'm not sure just what is going on with the dip stick. The bike not me. With each oil and filter change I will end up puting in 4 Qts not the 3.9 as noted in the specifications. In the engine oil level checks (maintenance section) with the bike on the center stand start and idle for 3-5 minutes wait 2-3 minutes then check oil. If at or near the lower level add to bring it up to upper level. My problem is that after I put in the 4 Qts, run the engine until the fan comes on and goes off, let set for 3 minutes the dip stick indicates the lower "add oil" level. I can let it set for 2 or 3 hrs, recheck the level and it is at the upper "full" mark. I know I have a full 4 Qts installed but according to the maintenance manual I should add oil to bring it up to the full mark. I have never done this because I know the engine has plenty of oil. Could there be that much difference in the volume of a production crankcase? Could there be that much difference in the lingth of factory dips sticks? Is this something I should just grin about and get on with life?