Engine Oil

[TTLG05]

Hi!

I have a DF40 2004 and I want to know what grade of oil that goes into it. Currently I put the 10W40 full synthetic. In the owner's manual it says to oil origne, but their bottle he wrote nothing. Is that I put the correct oil?

Thank you and good day

[boats.net]

Suzuki recomends 10W40 Suzuki or a FCW certified oil for marine water cooled outboards.

[TTLG05]

Thank you!