Welcome.Just bought a 2020 ram. With cummins. With all this pump stuff I see on internet. Should I be running an additive? Will it void warranty?
Thanks sir. I'm worried about if pump goes out they can test and see i have edt in itWelcome.
Yes. No.
There is a thread about it here:
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CP4 Changes - additives discussion
I have seen better results with xdp over edt. That would be the old style pump. Below is the new style. With the single dimple marking and other dimples below. The designation is the single larger dimple in the circled location. That is the only way to tell is if that single dimple is there the...hdrams.com
My local station has "premium" diesel so I wonder if already has an additiveWelcome.
Yes. No.
There is a thread about it here:
![]()
CP4 Changes - additives discussion
I have seen better results with xdp over edt. That would be the old style pump. Below is the new style. With the single dimple marking and other dimples below. The designation is the single larger dimple in the circled location. That is the only way to tell is if that single dimple is there the...hdrams.com
Premium or plain diesel all have some additives added. It is more like the formulation that is different.My local station has "premium" diesel so I wonder if already has an additive