What a minute!, What happened to MB not recommending the use of oil additives. At least in my owner's manual it states that. Granted it was 1983, but oil has improved in 19 years, so why the need for additives. As a matter of fact, I have yet to see any car company recommend any oil additive. I know that my VW's owner's manual does recommend fuel cleaner occasionally, but it also says they don't recommend any oil additives. This sounds like a little profit padding to me.
1994 MB E320 Coupe (199,500 mi)
1992 MB 190E 2.6 (173,000 mi)
1983 Porsche 911SC (148,000 mi)
2004 Volvo V70 2.5T (198,000 mi)
President of CT/Westchester Section