Napa Silver:
Comments:
This filter's only claim to fame lies in it's surface area- 190 square inches. Other than that, it's by far the most poorly designed and constructed. The large surface area comes in part from the fact that there is no filter "cartridge," the casing of the filter itself is used as a cartridge. It is also due to the fact that the filter material was half the thickness of the others tested- only .016" thick! While this design saves money, the lack of a proper cartridge and small end plate holes look like it would seriously impede flow. The stamped-steel spring bypass valve looks like it would not only seal poorly, but also flow poorly when open, and be likely to stick open if it ever did. In all, the design of this filter is so questionable that I would recommend against it's use, certainly in racing.