Yeah, there are no specs on their site for it. They filter very well, if thats what your looking for, and provide low silicon numbers. I have heard they filter down to 1 micron with excellent efficency, don't know how true that is, but the dry technology is excellent. Had one on my truck for almost two years now. Just picked up 6080 for my cousin's 06 to use with his mac intake. Two things I don't like about the amsoil filter, their is no wire screen on the inside to help the element keep its shape, and the end of the filter just has a stainless steel cap instead of being indented and have more filter material added to it.