For the record, I changed the timing chain on my SDL at 280,000 miles because it had 10+ degrees of stretch. It ran much better after that. Parts and labor was about the equivalent of a timing belt change on a mid-2000 VW TDI.

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2012 Volkswagen Passat TDI - 103,000 miles
2004 Volkswagen Touareg V10 TDI - 160,000 miles
2003 Ford F-350 PowerStroke 6.0 -- sold
1987 Mercedes-Benz 300SDL -- 307,500 miles -- Retired
1991 VW Jetta GL ECOdiesel -- 429,531 miles -- RIP
2000 Volkswagen New Beetle TDI -- RIP
1987 Mercedes-Benz 190D 2.5 Turbo -- sold