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
BenK wrote:
Curious, but first admit am not a diesel guy, if these penny's per mile DEF fluid also drives folks to look for the cheapest diesel fuel out there?
Compared to how much the diesel option cost new and a rebuild costs ?
Nephew and I had this discussion when he ordered a CTD 2500HD 4x4. No DEF for him, nor neighbor's CTD 2500, nor neighbor's Duramax 2500HD. Other neighbor has a Ford 350 Super Duty and stopped complaining about DEF cost after we all asked the above questions...
How many penny's per mile are you folks saving by looking for 'cheap' DEF ?
There is a big difference between having bad diesel and bad DEF. Running bad diesel would cause catastrophic engine damage to your entire fuel system and thousands of dollars in damage. Most diesel fuel contamination issues come from water in the fuel which is what DEF is mostly made of.
Running bad DEF just means you will use more of it to lower NOx since it is injected on an as needed basis and it will keep injecting it until it lowers NOx to desired levels. DEF does not even get close to the engine and gets injected into the last catalyst after the DPF. The worst case scenario is that it could ruin the pump or injector if which both cost about $200. This is highly unlikely because the DEF does not get injected at that high of pressure as diesels to where contaminants would cause the same kind of damage.
This, of course, is only assuming that a cheaper brand is contaminated or is diluted more than the API standard of 32.5% urea to 67.5% water..... or it is past its shelf life due to how it was stored which is the most likely cause of "bad DEF" regardless of brand.
