I had to have the DEF pump replaced on my 2015 Ram 3500. The dealer claimed that the DEF fluid was contaminated and smelled like alcohol. They denied the warranty and charged me 2500$ for replacing the pump. I contacted National Center for Dispute Settlement and won my case. Supposed to receive reimbursement from Chrysler but haven't as of yet. They recommended only using Chrysler DEF . I have used Peak BluDef since owning the truck. Has anyone else had problems using BluDef