They have their reputation based on a higher than average failure rate of the same type. IE: rod bending
Of course it doesn't mean they all do, so you will have folks pop on to say that their's is fine.
It's like head gaskets on Ford V-6's. Happens to an inordinate amount.....

__________________
Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John