Service manual favors 10W-30 oil

[Cormanus]

In support of David, and for the purpose of information, here are the pages from the 2010-11 CB1100 Australian Owner's Manual. Maybe there's ambiguity: the first page mentions only 10W-30, but in the section on viscosity it makes clear those in warmer climates should use 10W-40.




For reference, the manual is available here—http://www.hondampe.com.au/docs/owning_a_honda/owners_manuals/motorcycles/CB1100A2010.pdf
For further reference there's a European manual here—http://www.hme-tc.be/TRG_LIB/NM2013/CB1100/DOCS/CB1100A_OM_ENG.pdf. I can't find a US one on the web.