engine oil,grade and quantity?

[BIG_G_1979]

Hi my dad has a 2011 w212 e250 cdi (2.2 bi-turbo) I think it's om651? Can someone tell me how much oil he needs for an oil change and what grade to use, he was thinking about castrol magatec titanium it's 0w30 thanks in advance

 

[AMGeed]

This is what Mobil recommend.

Which Oil for my Car? - Mobil? UK & Ireland

Best to check his handbook for the quantity required.