I would definetly stay away from anything that is supposed to fill in the fine scratches in the cylinder walls. Simply because that same material could plug your oil filter. Religous oil changes, with good oil will be all you need to do. BTW MB allowance for burning oil is as high as 1 quart every 600 miles.

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member