Emerson,
I am the technical manager at FRAM. The PH8A and the HP1 are interchangable. That said, do not run a racing filter on the street unless you are running oil pressure in excess of 100psi and changing you oil every two weeks. Racing filters are made for high flow and frequent changes. They...
Dan,
Why are you posting this link? There is not one shred of filter testing involved in it. It is 20 years old and has zero science or engineering involved. FRAM stands behind every single filter it makes (200 million filters a year). If a FRAM filter ever caused damage to your vehicle, we...