Funny part is that in every UOA done, oils like Delo 400 and Mobil Delvac Super match UOAs of synthetics pound for pound even with extended OCI. Its only when temps go down real low that good synthetic HDEO like Delvac 1 or Delo synthetic show their mettle. Otherwise for general conditions, Delo 400 or Delvac Super would do excellent. I have run diesels on these two and my engines have gone trouble free for miles.

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99 Gurkha with OM616 IDI turbo

2015 Gurkha with OM616 DI turbo

2014 Rexton W with OM612 VGT