I buy wal-mart batteries for one reason, price. I had to replace the batteries in my f350 diesel. $75ea at WM, $155ea at the interstate dealer who checked that alternator. If it were close I might consider the extra cost. But what can make a battery price gap that large?
The MB battery was $110 at the local tire store. But I was stuck needing it now, so I got it there. WM was again a lot less expensive.
I try and buy local when I can, but somethings make it too much to support the local guy, over the big chain.

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83 300SD Dark Silver Dark brown inside