What oil grade does a 2005 Ford Transit TDCi 135 T350 take?

Can't see any clear answer online for what oil grade this transit takes… Some people say 10w/40 and some say 5w/30!
Just needs to know how much the sumps and and what exact oil it has! Plus if it needs to be semi or fully symthetic!

Just go to the eurocarparts or halfords website and type in the reg and they will tell you what oil to use, you will need at least 5 litres for this van

Transit takes 5/30 and gulps down 6.5 liters!
least that's what my Autodata says.

Remember it must be for diesel engines.