Synthetic Vs Mineral
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Join Date: Jun 2005
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'05 E320 CDI, '08 BMW X5 4.8i, '11 Duramax 2500HD
I only use Mobil 1 (Delvac) or "Truck and SUV" oil in my CDI which exceeds the spec of the Mobil 1 Gas engine oil that the MB dealers use... this oil has additional amounts of the detergents which suspend the soot that diesels have more of.