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
45Ricochet wrote:jus2shy wrote:
The white crust you guys are seeing are the ammonia crystals that show when the water part evaporates. Completely harmless. Dissolves once wet again.
Don't believe me? Pour a little def on a dark surface and let it dry. You'll get crystal formation pretty quickly.
LOL
Have you tried that test on your paint?
I wouldn't suggest it :W
I know the stuff is labeled corrosive. I've had a small stream of white crystal down the side of my truck occasionally when I accidentally over-filled. It doesn't rip the paint right off. Just took a wet cloth once I saw the stream and wiped it off. No damage. Bird droppings seem to be a bigger problem for me.
