Advance Auto "TotalGrip Protection Plus". It's their house brand. Looks to be pretty decent, I am doing a short oci w/ CD-2 for engine cleaning and decided to use one of these. They are less than $2 per filter! Anyone know who makes these? The construction seems pretty good on them. If nothing else I thought I would suggest these for ARX/CD2 runs as something cheap and not Fram (lol). If I get a chance I'll cut this one open when I'm done with it and post pics.