I started running Mobil1 15-40 and Delo 15-40 in both my cars. Can't say they "sound" any happier, but I know this is a much better oil with the additive package for our camshafts. There are too many oil arguments....so regardless of which you choose, just change it hot, and change it often. I keep mine to 4k-5k changes on the dot and my valvetrain on my 300TE looks brand spankin new.

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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