[Mikendebbie]

Well, you have a good point. They might have a high school kid popping those paper stickers on the jug before they go on the shelf - meaning this is the date it arrived at the store. I tried googling the “date tag” for Walmart DEF and could not find anything definitive on the Walmart site. Lots of technical data but nothing about the manf. date. It seems that the container, labeling and screw on spout went thru a design upgrade maybe couple years ago. The old containers had the “born on date” ( my term not theirs) stamped in black ink on the front. It was a “date” - not a code. In the new label design the date is no longer stamped. I can’t say for certainty what that date tag means. I will continue to use the Walmart DEF however.