Originally Posted By: 01rangerxl
I took a 3 year old car battery to WM and exchanged it for a new one...no receipt, no ID, no anything.
I did this too but the battery was 3.5 yr old so they prorated it. Did let me get a cheaper replacement so I was only out $1!
Found the battery at the town dump BTW.
This question comes up when people get some really cheap oddball oil somewhere else, like M1 15w50, then "trade it in" at WM. Ethical debates ensue.