Me? Done it once and I will NEVER use engine flush again, not even on a petrol lawn mower, I'd rather shove a bottle a bottle of washing up liquid in there, it'd still f**k up the motor but at a tenth of the price!
I did the truck 18 months or so ago, followed the idiots guide to the letter but at the time I didnt know that the sump had been made in a way that didnt allow it to drain fully so ended up with about .5ltrs of a flush/oil mix still in there when I replaced the filter and filled with new oil. The turbo made a good job of dying a few days later (threads on here somewhere).
This posting may have been helpfull, on the other hand probably not... Either way, I may have had drink when posting it in which case it's probably not as helpfull as it could have been
Work safe, and remember all technical problems can be resolved with a hammer, the trick is knowing where to hit it and how big a hammer to use (I often find it may also help to have a spare bit in the shed to replace the bit you have just mullered

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