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
WM doesn’t make anything. Not oil not eggs not pants and not def. they buy in bulk at the manufacturer and have it branded with their own brand. As far as truck stop def goes if you go to a major truck stop that has a lot of fuel turn over then your def will be good to go as they will go through a lot of def also. I work for a fuel and oil distributor and I know how old the def that I buy is because I’m the one that drove to the manufacturer and trucked it back.
