I had good luck with Diehards during the 1970s and 1980s but have used a variety of brands since. My 300D has an Interstate MTP-93, 850 CCA, new in November 2002, 72 month warranty (PO bought it). It seems to be holding a charge well, floats at about 12.6 Volts, starts the car instantly, probably has never seen cold weather. Whether it will make it to November 2008 is another question. I'll learn a lot more about it in a few months -- annual Xmas trip to Salt Lake City. My block heater will get used for the first time and I may put a charger on the battery overnight, just to keep it warm.

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970