I claim no special gifts or experience in engine building but, isn't the engine still running in then perhaps ?
I've just had the lovely experience of running in my new engine and @ 1000miles its still burning oil but i'm hammering the crap out of it whenever i can which is harder than i thought, using the trailer and hills as much as possible. Although still burning oil, but much less so when hot and chuggs away merrily when cold. For a 200tdi i'm not too concerned, but should I at this stage ? I dunno but i do know that when i reach 3k or more id expect the oil burning to be minimal and even less so at 5k. But again it might take 10k, i don't really know yet. Is it a defined range ?
How many miles have you done ?
Mine has done over 10K now
How much oil are you burning? Have you measured it per 100 miles or per 200 miles etc?