I use Mobil Delvac 1 in my '97 MB E300 Diesel and '96 Passat TDI. Very happy
with it, especially in the MB. Change interval 7000 miles. I don't mind the
cost because I intend to keep these cars very, very long time. The Passat
has 140K miles on it and still runs like new. The same with the MB, although
with only 80K miles.
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