I have just read an article that I knew I'd read before about the S and C designation in engine oil. Frank King from the MBCA said that the S means for service, as in a new dealership, gas staion, retail available, and that C meant commercial, for diesels, fleets and commercial vehicles. Is this accurate? I am a MBCA member but I don't know about the scope and depth of Frank King wrt MB. Not really important stuff but it's interesting.
1994 E320 Wagon (Died @ 308,669 miles)
1995 E300 Diesel (194,000)
1999 E300 Turbodiesel (244,000 miles, dies at 255,000)
2006 Toyota Tundra SR5 AC 4X4 (115,000 miles)
2011 Audi A4 Avant (129,000 miles) hate this car!
BMW 330 xi 6 speed manual (100,034 miles)