Join Date: Apr 2015
Location: Murrysville, PA, USA. A pleasant, wooded suburb of Pittsburgh.
Hello Onur, Welcome!
The Manual prescribes 15W-50 fully synthetic oil because the 390 engine is high output and runs hot. The recommended brand is Motorex 4T. However, any good quality fully synthetic oil from a major company will work. Silkolene, Amsoil, Mobil 1, Shell Rotella, Motul, Valvolene and others have been used successfully. Just be certain you have a 15W-50 fully synthetic oil.
Recommended oil change interval is 7,500 km. Some owners change earlier, at 5000km. It is good to use a new oil filter at each oil change , but if you use a short change interval you probably can change filters every second oil change.
"If you don't know where you're going, you might wind up somewhere else."
2015 390 Duke
1980 Moto Guzzi V50 II (becoming a cafe racer)
1984 Moto Guzzi SP 1000
Last edited by Diploman; 08-17-2016 at 04:47 PM.