Diesel Fuel and Additives

[Big1]

Hotshot.

[TCNashville]

The Ford 6.7L PSD has run the CP4 since it's inception. Most failures occur when water is introduced into the system via the fuel and rust forms in the internals of the pump. When I had my 6.7L, I ran PowerService grey bottle in every tank because it just made me feel better and it didn't cost much.

[Marine71-76]

Originally Posted by TWP723

A new 6.7 PSD doesn't need any kind of fuel treatment. If you do decide to use one, use Ford's PM-22-A Cetane Booster.

2nd Ford's Cetane Booster - we use it in our 2008 F450.

[curver900]

Originally Posted by mass-hole

I have also not heard of issues with Ford's CP4. Ram, for sure. I guess it's bad enough that they decided to go back to the CP3.

Don't forget GM they had them too.. but they were smart and didn't put in a lift pump... /s

Then they moved to the new denso system... in 2017 IIRC or 16 not sure which..