Batteries.

Since owning Mercedes for 26 years, this is my take on the batteries

I have owned Mercedes, Oreilly's, Walmart, Sears, Interstate etc.
I find that it depends on where you are located. When my son was going to College in Stillwater, Oklahoma we got a Walmart battery since it was easiest for him if he had a problem. My daughter has a Oreilly's battery in the 240D, Easiest for her in College Station at A&M. I have Mercedes batteries in the SL. It's alway in the metroplex and we have 4 Mercedes dealers here.

Find a good price AND good warranty, at a place that is convenient and buy that battery. I can not say that one manufacture it better than another in longevity.

Dave

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1970 220D, owned 1980-1990
1980 240D, owned 1990-1992
1982 300TD, owned 1992-1993
1986 300SDL, owned 1993-2004
1999 E300, owned 1999-2003
1982 300TD, 213,880mi, owned since Nov 18, 1991- Aug 4, 2010 SOLD
1988 560SL, 100,000mi, owned since 1995
1965 Mustang Fastback Mileage Unknown(My sons)
1983 240D, 176,000mi (My daughers) owned since 2004
2007 Honda Accord EX-L I4 auto, the new daily driver
1985 300D 264,000mi Son's new daily driver.(sold)
2008 Hyundai Tiberon. Daughters new car