mrs P sele is up for an oil change soon, and after my last rip to the dealer I thought I would confirm what the spec currently is, seen as none of my cars have seen a dealer in years.
so I phoned Mango's seen as they have been dealers for years,
and they say Alfa recommend the 10/60 for all 2.0 TS (not JTS) engines and have done for the last three of four years after a service bulletin change. They stick with the 20K for the 1.6s and 1.8s.
So, 10/60 is the way to go if you have a 2.0, unless anyone has advice to the contrary.