MOT history says all is mostly well.
Know nothing of engine failure details but have a spare !!
Would be rare for a TD4 to destruct unless turbo has caused run away.
Paid about the price of tyres on it so worth a shot.
So yer found a web site that suggests clubbing them to death is the best meffud. When searching the web you have to step back and consider if the information being given is the best. They set themselves up to be an authority on animal welfare but...
It could be a number of things to be honest…
Does the noise change with road speed or engine speed?
Does it change/happen when in a particular gear, or neutral? With the clutch in or out?
Any difference when turning in a tight circle?
Does it...