See attachment. Let me say that I am less than pleased. Fuel dilution at 3.1% means there is about 6 ounces of gas in the oil. Report suggests excess idling may be the culprit. It did idle for about 20 or 30 minutes during the delivery process when the "concierge" was explaining features/functions. The fact that the engine is still wearing-in could also factor into it. Or the fact that my wife's typical drive is 10 miles to and 10 miles from work. And it could also be that MB's gasoline direct injection engines are no better than GM's gasoline direct injection engines with respect to this phenomenon. I had hoped for better. Either the fuel dilution or fuel dilution combined with mechanical shearing has caused the oil to drop to a viscosity of a 20 weight (8.6 cSt). Either way, I am extremely uncomfortable leaving this oil in for another 8,000 miles. The whole situation certainly calls for additional and frequent testing until some trend can be established.
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