The dash job should pop up at 10k or 1 year, whichever is first. I don't do 10k a year so it an annual 5k job for me. I don't see an issue with modern synthetics.

Also, not crazy about snake oils but liqui moly ceratec is very highly regarded in the m278s to prevent cylinder wall scoring. The m273 doesn't really have that issue but seems to run quieter (especially few secs at startup while pressure builds) after adding it.

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth