I think the 0w-30 will be ok - don't worry. That was the spec of the 506.01 oil originally specified for the 140BHP 2.0TDi and that's what's specified in my manual - that might even be what is in your engine already from its last service....
For the variable servicing on a TDI 140 you want 0w-30 506.01, which is what it was actually designed for, or the later 5w-30 507.00 which has superceded it (and they'll mix just fine....).
(although as Dave says, it is important that the oil specifies the 506 or 507 compliance. Any old oil of the right viscocity won't do, but just putting half a litre in for a few hunderd miles or so isn't going to do any harm - even the manual says that's ok....)