New Cummins Question
I see there is alot of diesel experts here so I have a couple questions. Just traded in my 2017 6.4 hemi for a 2017 cummins. I had a 2003 cummins before the hemi so this new cummins and guages are a l...
Forum Discussion
kirkl wrote:
What kinda DEF fluid are you guys using? i havent had to fill it yet but just wondering. Salesman told me to fill it when it gets down to half first time then I can just fill it whenever.
Whatever you can get cheapest. As long as it's API certified that's all that's required, and I've never run across any that wasn't. I generally get it at the pump anymore because it's a bit cheaper and I can get a full top-off but I've also used the Supertech stuff from Walmart with no issues. I don't see any advantage to spending more on a name brand since it's all the same.
