Any type of oil will work in a berlingo can. There is not a specific type of oil a person needs to get for this van.
Castrol 10/40 Magnatec Diesel Semi-synthetic will suffice.
Manual gear box 2 litre Automatic gear box are sealed unit
10.000 km
15w40 so says the manual
look in manual
13.3 Qts filter dry.
In the gearbox
I have an Isuzu NPR 1992. The oil capasity is 12 quarts.
You will need to remove the passenger side plastic wing plastic from inside the wheel arch. In front of you on the gearbox you will see a square drive plug. You need to remove this plug, fill the gear box with oil until the oil starts to drip out from the hole.
book says 15 qts.w/filter
agip20w50