My Euro 240D (uses the same delivery valve seals as the 603) was leaking on 3 out of 4. This started right after ULSD. It's fixed now. I am going to try giving it a dose of Marvel Mystery Oil with each fillup. I am hoping that might give it enough aromatics to keep the rubber pliable.

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Palangi

2004 C240 Wagon 203.261 Baby Benz
2008 ML320 CDI Highway Cruiser
2006 Toyota Prius, Saving the Planet @ 48 mpg
2000 F-150, Destroying the Planet @ 20 mpg



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