There is a Smart Car discussion group over at MBCanada.com. 15W50 sounds like it would be heavier than what modern diesel engines would call for. I bet they are suggesting 5W40 or 0W40.

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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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