I use the Honda GN-4 stuff, 10w 30 I believe with the OEM Honda filter.
I've put in the whole gallon last change, tried to drain some but didn't get enough out. Oil still filled the sight glass fully past the top line, but as some told me on here it didn't hurt anything that I can tell. The engine did seem to burn some oil though, it went to about halfway between the lines (where it should be) and stayed there.The hornet is so smart it fixed my mistake! So I wouldn't worry too much about being exact with the 3.8 qts.
I am planning to try this T6 stuff you hear so much about on here next change. I like that it's cheap, the Honda stuff is like 30 bucks a gallon at my dealer.
"A motorcycle is not just a two-wheeled car; the difference between driving a car and climbing onto a motorcycle is the difference between watching TV and actually living your life."
-2005 CBR 600 F4i
-2001 RC51 ** SOLD
-2002 VFR 800**SOLD
-2002 919 **SOLD
-2006 599 ** WRECKED