Liqui-Moly is one of the best oils on the planet. I'd have no problem using it. You can go easily 7-10 k miles with any synthetic oil. Just monitor the condensate paste forming during the cold months, and drive it hard whenever you see it starting forming to get rid of it.

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Stable: e92is, e46 M54B25, e83 N52, e53 N62 - sold, e39 M54B30 R.I.P.