The main concern here is protection of the piston rings. I don't agree with everything Kent says or recommends but he is 100% with recommending an oil change at 3000miles MAX.

Yes we've come a long way in oil chemistry and such but these engines have hundreds of thousands of miles and are 30+ years old. Change your oil every 3000miles or 5000KM.

https://www.youtube.com/watch?v=y4VqcghARzg

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1976 Mercedes 240D (Sold)
1985 Mercedes 300D Turbo Diesel: 500,000KM
1986 Mercedes 300E (Sold)
1988 Mercedes 300E (Sold)
2002 Mercedes C240 (Sold)
2008 Mercedes C350 4matic

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