If you expect me to accept that as "official" HD guidance, I need a source reference.

I'm not arguing, one way or the other, but anybody could have written it.

 

No. Just, no.

Oil "full" at operating temp is NOT over-filling. But, we don't do oil level maintenance at operating temps.

However, the point I, and others in this thread have been trying to make is, when checking oil level COLD, fill to BELOW the full mark on the stick, to avoid oil in the air cleaner.

 

I have owned EVOs knuckledheads a TC88 and now run a TC96. I have never heard of this happening unless the piston rings are worn which causes blow by from the increased pressure in the crankcase. In my TC96 I put exactly 3.5 qts. Maybe you guys are overfilling??

 

Please re-read the link, you will see the source reference in the body of the text-

"The following is straight from the HD manual, and it is the same for the Twin Cams and the Sportster Evo motors-"

In case you think that I made this up, for further detail look at

Page 92 of 2009 Sportsters Owners Manual

and

Page 134 of 2011 Twin Cam Owners Manual

 

We pay $20,000 to beta test for Harley

 

17,000 on my 2010 Ultra Limited and never experienced this problem.