Ducati Diavel Workshop Manual page 62

Maintenance operations
Refit the mesh filter (7).
Apply a bead of fluid gasket to the cap (6) as shown in the figure.
Remove the filler plug (2) and carry out refilling with the specified oil type (Sect. 3 - 2, Fuel, lubricants and other fluids)
up to reaching the notch that identifies the MAX level in the sight glass (1).
Refit the filler cap (2). Run the engine at idle speed for a few minutes.
Check that there are no oil leaks and that the engine oil pressure warning light on the dashboard switches off some
seconds after starting up the engine. If not, switch off the engine and trace the fault.
After a few minutes, check that the oil level is the specified one; if necessary, restore the MAX. level.
Tighten the external cap (6) retaining screws (5) to a torque of 10 Nm (Min. 9 Nm - Max. 11 Nm) (Sect. 3 - 3, Engine
torque settings).