interesting, first time I've seen this info. Everything else always blames lack of lubricityWhy are the Fords not failing at the rate of the Ram-installed pumps?
Correct answer: Because the Ram pump is overclocked causing it to work harder than the other brands.
The CP4 doesn't fail because of low sulfur diesel. It fails because of it's design and no "additive" is going to correct it's design short-comings. Ram overclocking the pump to produce higher PSI only exacerbated the problem.
The CP4 piston is not "located" in it's bore allowing it to spin within the bore. There is a roller bearing at the bottom of the CP4 piston that, when spun, becomes perpendicular with the cam that actuates the piston. Once this happens, the roller bearing cannot roll and the pump eats itself.