| Just has my 750 ss serviced at Cornerspeed and Nelly used shell advance ultra which is fully synthetic and is suitable for motorcycles with wet clutches.
From the shell website (worth a look, quite an interesting site)
Key features of Shell Advance 4-stroke oils
- Uses base oil with built in high viscosity index and excellent shear stability, meaning less viscosity improvers, to keep engines and gearboxes cleaner
- Additive technology which perfectly suits the requirements of wet clutches
- High thermal stability to give longer lasting and safer lubrication
- High evaporative stability and hence lower engine oil consumption
- Better cold flow characteristics and hence easier engine starts and quicker protection
- High quality anti-wear protection
- Powerful antioxidant action to ensure it protect parts for longer and keeps your engine clean
- Top quality detergents that provide effective component cleaning and long-term cleanliness
- Strong dispersion agents that keep carbon particles in suspension and prevent sludge build up
- Anti-foaming additives that maximise lubrication effectiveness
- Excellent elastomer compatibility to protect hoses and seals and avoid adverse effects on hose performance
- Special additives to neutralise acid build up
- Oil technology designed to suit the requirements of incorporated gear boxes
- Meets or exceeds highest international specifications (JASO, API)  | 
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