Ok I have used WIX filters so far but found the bypass psi of the WIX is 8 and that motorcraft raised the psi on the FL500s to 16psi. The WIX also uses a different seal than the MC filters. What will this affect and could it become an issue on the 5.0. This time I'm going back to the Motorcraft but figured I would ask for future reference. I have had no known issue to this point.
