Quote:
Originally Posted by babymog
For synthetics from Mobil you want to use either Delvac 1 synthetic or Mobil 1 Turbo-Diesel & Truck
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I use the 5/40 version of the latter in my 99 which has the same engine as the OP (only turbo'd). After a 15,414 mile change interval the wear metals were good, the TBN was still at 7.7 and soot was only at 0.2%. You could do a lot worse.