Blue DEF
Just wondering about DEF for your diesel trucks. My dealer that I bought my truck from said just use Blue DEF and nothing else. I talked to another camper with a diesel truck and he said he buys the...
Forum Discussion
The important thing is that whatever DEF is used, that it's properly certified. That certification assures pharmacy grade urea and the water is properly distilled as well as the proper mixture ratio. Walmart and Blue DEF and many others are properly certified. It makes a lot of sense to buy the least expensive and assure the date codes are recent. Also, when buying that product make certain the seal is in place. There have been reports that some scum bags have purchased DEF and emptied the container and refilling it with tap water and returning the jug for credit.
