I recommend using diesel grade 15-40W such as Chevron Delo 400 or Shell Rotella-T (Delo has more cleaning additives though based on my oil analysis) and it'll keep that top end squeaky clean and give it the ZDDP additive package it needs for decreased wear.

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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