Powerstroke 6.7: Motorcraft 2051s vs Wix/Napa 7151

[OVERKILL]

I’ve been running it for years because of the efficiency. I doubt it meets those specs anymore.

I'd personally just run the Donaldson, looking at the numbers, at this point.

 

[ZeeOSix]

Come on ... efficiency doesn't matter. (j/k) ...