Ducati MULTISTRADA 1200S ABS 2015 Workshop Manual page 882

Refitting the lubrication system
Note
Before fitting the hoses check the presence of O-rings and lubricate them with the indicated oil.
If nipples (8) have been removed from the cooler, fit a washer (9) on each nipple (8) and apply specified
threadlocker on the cooler side threads.
Important
The gasket must be positioned with the sharp edge facing the cooler.
After applying the indicated threadlocker, start nipples (8) on the oil cooler and tighten them to 23 Nm ± 10%
while holding the hex nuts (10).