Ducati STREETFIGHTER Owner's Manual page 222

Attention
Brake and clutch fluid can damage paintwork
and plastic parts, so avoid contact.
Hydraulic fluid is corrosive; it may cause damage and
lead to severe injuries. Never mix fluids of different
qualities. Check seals for proper sealing.
Attention
Clutch fluid level will increase as clutch plate
friction material wears down. Do not exceed the
specified level (3 mm (0.12 in) above the minimum
level).
221