I recently developed a ticking noise that seems to go away after 5 mins of running the engine from cold. It also seems that the higher the rpm the faster it gets then quites down at around 2000rpm. I noticed the area around thge cams when looking throught the oul fillup is very caked with sludge. Nasty. Both my 240 and 740 seem alot cleaner with double the mileage. I believe the oil wasn't changed as religiously by the previous owner as I do it.
Can anyone recommend an engine flush that can clean it up?
Thanks in advance
Chris
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1988 245 340,000 Kms , 1990 740 GLE 16V 220,000 Kms
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