Great product and more affordable when purchased at Sam's

The BlueDEF is a superior product vs others sold. Walmart does have others, but this is the best one out there for a fair price.

This was recommended by the dealership who sold my son his truck. It works well and keeps his diesel running smooth.

BlueDEF works exactly as it should—keeps my truck running smooth with no issues. The price at Sam’s is hard to beat, and the jug design makes it easy to pour without spills. Always consistent quality.

I've been using this kind of DEF in my trucks since 2018 and I've never had a problem I will continue to use it and recommend it. Sam's has the best price for it.

Highly recommend. Best DEF on the market.

I use this in my motorhome and look for the best price.

We only buy this when its onsale. Works like it should.

As expected

The price for this item was significantly cheaper than a comparable brand from Amazon.