My opinion (and that of mercedesdismantlers of california who have done more MB transmissions than we have pooping)...Take it back and get standard Dex III...brand is not really an issue. Just change fluid and filter every 25k and that's about it.

Plus, I bet you paid insane $$$ for that Mobil1.
$3/qt at Walleyworld.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k