Traditional diesel "motor oil" (w/o the additive cause cltch slip) runs fine on m/c. ***Beware of the newer API: CI oil that had additive cause cltch slip ***
"red" Shell 20/50 is one of those "traditional" oil ( CF:thumbsup: / SJ ) & had somebody in china tested in the bike:icon10:
Many motorcycle "taxi" runs fine w/ Mobil Delvac 1300 in Sothern China. :icon10::icon10::icon10: