Picked up my new Ram 3500 yesterday and they informed me that I have to use mopar def fluid in order to not damage the system...have you other Ram owners experienced the same story?
The dealer is saying that because he/she wants you to buy it fromthem, because they mark it up and make a bigger profit than other resellers.... same as with ANY part that the dealer sells.... especially wiper blades, oil filter, air cleaners, etc. LOL