Quote:
Originally Posted by mototech
people have alot to do with turbo failures as they dont understand how to drive or look after them, i,e driving them to hard form cold and then just turning them off when you should let them idle for a little while before turning them off to let the turbo slow down before the oil pressure drops when you switch off, also i wouldnt let any car of mine do more than 10,000mls between oil changes manufacturers use extended invervals as a selling point but they dont do engine life any good especialy turbo ones...
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Quote:
Originally Posted by Gazza77
Fair point, but unless the manufacturer states they have to be left to idle (not a BMW owner so can't say either way), then it's not really reasonable to expect all owners to do this. Same with servicing, you or I might not go over 10k without an oil change, but if BMW says it is ok, then there cars ought to be able to cope with it!
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No the manufacturers don't tell you this, maybe they do now, but not at the time. Obviously I know that know, but when speaking to a mechanic after a turbo failure is when 99.9% of turbo diesel drivers learn this....
In the case of the BMW rapid cooling may accelerate the problem, but it is caused by a harmonic resonance in the turbo causing metal fatigue, whilst I was still fighting with BMW over my warranty expired by one week I was pricing the repair myself, a BMW specialist put me in touch with a engine dealer at Heathrow who sells one of these engines per week! He said they all go eventually, whether at 60k miles or 160k, he said the failure is pretty much inevitable and the specialist agreed.