Which brand of def fluid.
Was talking to the commercial truck guy at a ram dealer and he said they recommend using mopar brand def fluid in the cummins hd diesel.true or false.
Forum Discussion
FishOnOne wrote:
Is the DEF in the truck stop tanks API rated and ISO rated?
Well I would think yes as they sell the Peak Blue DEF in box just like Wally World. I called the J at I-280 and I80/90 and was told by the Manager on duty that she thinks the same company that supplies their boxed supplies thier bulk DEF and that is Peak. She asked my to call back after 8AM when the GM is in and she could tell me for sure or at least get me in touch with someone that could.
Bottom line is, if you are that worried about it, then you should only be buying DEF from the manufacture's dealer network that built your vehicle!!!!! That way if you have a problem it is their problem not yours!!!
Don
