Ducati Superbike 749R 2006 User And Maintenance Manual page 152

Remove right-side body panel (page 55).
Unscrew the plug (3, fig. 54) and add a mixture of water
and SHELL Advance Coolant antifreeze or Glycoshell
3
(35-40% volume) up to MAX mark.
Re-attach the plug (3) and reassemble all removed parts.
This mixture improves operating conditions (coolant will
E
start freezing at -20 °C/-4 °F).
3
Capacity of cooling circuit: 2.3 + 0.5 dm (litres).
Warning
Place the motorcycle on a flat surface (vertically), and
make sure the engine is cold before proceeding.
fig. 54
https://www.motorcycle-manual.com/
59