TD5 Engine problem

[spindrift]

I know this is a VW forum, but you have helped me before with my brothers Land Rover.
Whilst out driving today, going up sutton bank (Yorkshire 1 in 3 ) it started to stutter under load, but got up anyway, drove fine for about 7 miles, then heard a knocking noise from the engine plus loads of smoke from the exhaust, we pulled over and turned it off, checked the oil only to find the dipstick and its hole were smoking, checked the water NONE, put in maybe 8 litres ( the temp gauge showed half, nowwhere near the red), the car then restarted but was knocking really bad, from the big ends or so it sounded, turned it off, checked the oil filler cap just clean oil no water, so the head gasket hadn't gone.
Left it for an hour, restarted it , sounded better even ok on tick over, but if we gave it a bit of throttle, then the knocking returned.
Called the RAC who took it home.
Has anyone any idea's, I have suggested to drain the oil and put fresh in, or is there permanant damage (the engine has done 110,000 miles)

[Simon Baxter]

It sounds like it's f**ked.
Sorry.

[big red bus]

done lots of these with injector problems. got 1 stuck open, knock is diesel knock?

[bigherb]

Sound as if you badly overheated caused by a loss of water possibly due to a leaking hose waterpump rad etc. If the water level drops below the level of the sensor then the gauge will not register the correct temperature as there is no water to tell it and will only read the temperature of it's housing which is a long way from the hottest parts of the engine. Sounds like it may have runn a bearing or damaged a piston change the oil and hope for the best.

[spindrift]

Today my brother changed the oil (synthetic) and now he states that its worse than before, knocking like crazy, now I can understand the knocking, clearly the big end bearing have gone, but I can't understand how its worse than oil that's ruined and very thin.
It now worries me that the turbo bearing's could be damaged also.
Any further advice, or are we looking at either a rebuild or a new engine ?