That would have been my first guess, oil ring gone. But with the overwhelming cases of head gaskets going in these engines that might be the trend.
This kinda worries me as I'm looing at getting a 98 disco with 300TDi at in the not too distant future, it sounds like it would pay to have the headgasket changed with the timing belts on these engines.
Dosn't exactly instill confidance in getting one:(

