You need to put your location in your profile. Australia?
Nulon isn't readily available in the US, but I looked it up and it's a Diesel oil with the following API ratings, none of which are motorcycle.
API SN, SM, CI-4+ , CJ-4, CI-4, CH-4. Typically, an API SJ through SM engine oil would include some friction modifier, which is generally not recommended for wet clutch motorcycle use. The Cl-4+, CJ-4, CL-4 & CH-4 ratings are about diesel soot-related viscosity issues.
Where are you seeing it says it's ok for motorcycles? Typically I would look for a JASO MA/MA2 rating to be included if it was Moto rated.
A common diesel oil used on motorcycles in the US is
Rotella T-6. If you look at the back side of the jug pictured in the link and read the ratings you will note that there is no API ratings for SM, but it is rated JASO DH-2 along with MA/MA2.
I would suggest you do not use the Nulon oil in your Super Tenere just because it contains friction modifiers like most automotive oils.