| Hi All
Just got a 2002 E39 2.5TDS and registered myself - so Hi! My name is Jim and I come from Farborough UK. The car is SE but has sport bits on it.
Back to the topic - I learned that knack of killing engines a long time ago. My advice would be that most wear is caused in the first 5 mins driving. Turbo engines especially need warm oil at the right temperature to lube all the bearings.
So - to kill an engine without fail:
1. Thrash it from cold. Everyday out of the work car park is best, nice and regular.
2. Never change the oil and only top it up when the oil pressure light comes on when you go around a tight corner. That way the oil gets overheated and loses its lubricating properties ASAP.
3. Also - if you want to make the crankshaft bearings wear out quickly it's better to use revs low enough to make the engine shudder or vibrate.
A bit tounge in cheek but a lesson I learned the hard way. Reverse the advice and don't worry about the revs. It does it good to red line it now and then and good oil will cope if its warmed up.
Your consumption will probably be best between 1,500 and 2,500 revs.
Regards, Jim | 
