My 2017 Ducato (Euro 5) has now covered 2500 miles, and oil level is half way down dipstick. Its not due for 1st service until Nov. 2019, so may need a top up prior to then. My handbook only mentions 0w-30 acea2 oil, but a call to my local Fiat dealer, giving the service dept. my reg. no.- the guy said "yours needs 5w-30". I assume from this that the service man is quoting for a Euro 5 version, but Deneb`s post above states that Euro 5+ engines ARE on 0w-30.... As mine is a 2017 vehicle, I assume it must be a euro5+ as it is one of the last ones before they went to Euro 6. How do I tell if mine is a Euro5+ and not "just" a Euro5?
Fiat's published workshop information in late 2016 specified the same 0W30 oil for the Euro 5+ engines as required for the then new Euro 6 engines. More recently, they have reverted to 5W30 for Euro 5+ engines. Whether this was a publishing error or by design I don't know (late Euro 5+ owner's handbooks also recommended 0W30 oil, so if it was an error it was in more than one place) but in practice it will make very little difference. The main reason for the change to 0W30 is to reduce emissions fractionally more than previously during cold starts and low temperature conditions. If you are only topping up then you can happily use either without any problem, as long as you use an ACEA C2 oil to Fiat specification.
If your oil level is at halfway point on the dipstick though, that is fine. It shouldn't be topped up to the maximum mark, you are better leaving it about 5mm below on a modern diesel.
If you have a "New Ducato" aka X290, e.g. the facelift version from 2014 on, it will be Euro 5+
Personally, if your van has only done 2,500 miles in 12 months on a new engine, I'd consider a full oil change now to flush any microscopic wear particles and contaminants out of the system. Extended oil change intervals are intended for vehicles covering at least 10,000 miles a year and even so, a new engine would benefit from a change of oil much sooner than 2 years unless you're a business buyer intent on keeping running costs to a minimum and intending to dispose of the vehicle after 3-4 years.