Having not participated much here in a few years I am finding a lot has changed in the oil filter world and it is hard to keep up. It would be great if we had a grand summary that was kept up to date with information like what company produces what brand since when, construction of different models, claimed efficiency, price, availability, etc. For example, until coming back here I was not aware of the changes to Fram Ultra filters, and it would be great to know which filters still use synthetic media with a wire backing, which filters still claim 99% at 20 microns, etc. Maybe at the very least we all could repeat certain known specs when we post about a particular filter: construction, claimed efficiency, price, where we bought it. I'll see a thread that shows a cut open filter and just assumes we all know the specs.