I think the zinc is a bigger issue for the older cars that used to run on leaded, or diesels. The newer stuff probably does not need that formulation. I seem to recall Marshall saying that the OM603 was not dependent on the older formulations and the current (2004 era) oils were just fine. I have no idea what the newest oils lack or provide
clay On Feb 9, 2016, at 5:37 PM, Dan Penoff via Mercedes wrote: > So is the Delo synthetic best for engines like the OM603, or “regular” Delo > 400 LE 15W-40? > > Aren’t there some issues with the proper amount or lack of zinc in some of > the synthetics? > > Dan > > >> On Feb 9, 2016, at 8:12 PM, Dwight Giles via Mercedes >> <mercedes@okiebenz.com> wrote: >> >> I have used M1 15w-50 in my OM602 for 10 years. I do a lot of highway >> driving so I like the 50. I change @ 11 or 12k. I add 1 qt ca 7k. I have >> put 140k on it using this. I use 5-40 in my OM617 & in the 616's I had. >> YMMV. >> I like an oil thread now & again. >> >> Dwight Giles Jr. >> 1982 300CD >> 1990 300D >> Wickford RI >> On Feb 9, 2016 5:20 PM, "clay via Mercedes" <mercedes@okiebenz.com> wrote: >> >>> I like M1 15-50 for the older cars and diesels. I am running it through >>> Frosch for the past three years in an attempt to clear out 40 years of crud >>> in the engine. Just in case. Once it flows out clean during the annual >>> change, I figure I will move to Delo synth. >>> >>> >>> >>> clay >>> >>> 2002 s430 - Victor, a Stately & well tailored chap >>> 1974 450sl - Frosch - Two tone green >>> 1976 300D - Blei Vanst - it looks silvery >>> 1972 220D - Gump - She was green, simple and ran >>> 1995 E300D - Gave her life to save me against a Dame in a SUV >>> POS 1987 SDL - Beware Nigerian Scammers > > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
