Registered Forum User
Big Twin
Posts: 1,956
Join Date: Mar 2005
Location: Normally in my own little world
Mood: I own a flame thrower
10w/40 would be OK, but, you may have the oil light flicker on tick over when the engine is hot, Idid.
On my 748 Italia in Lincoln serviced it with a 10w/50 and said it suited the bike better.