So, in the process of jacking and lowering my car, the disconnected-and-hanging-by-the-rubber-hoses AC compressor got stuck between the ground and the oil filter, and punctured a hole in it. Great opportunity to slice it open! Time in filter: a couple of minutes Oil type: 30% paint thinner, ~10% diluant from the ink and dye industry (Wynn's Engine TuneUp), 55% SuperTech 5w20, 5% WD40 I bought 10 of these from Rockauto for 94 cents each or something like that. They're big. There's rust on that little bypass area. They must be old. Compared to a 7317 filter. I changed my neighbours oil in his 1.8L QG sentra, (it was over 100% over filled) so that's where that filter came from. You bet I slapped one of these big dirty cockfighters on there! 7317 inside the otehr can These filters are apparently 25 micron, "resin-impregnated heat-cured paper media"