Walmart gas discount offered through credit, money cards

File image of a Walmart store. ((AP Photo/Robert E. Klein))

August 29, 2012 3:45:37 PM PDT
The world's largest retailer says it will discount gas by up to 15 cents a gallon for drivers in 20 states who pay with a Walmart card.

That includes purchasing gas with a Walmart money card or Walmart credit card.

The offer begins Friday and runs through Christmas Eve.