Originally Posted by Pedge1

In several of the studies, there is a belief that if the media is thicker or a filter has more pleats, it is automatically better. That is far from the truth, there are several grades of media and thickness has little to due with performance. A filter with more pleats, usually has a lower grade media and is meeting performance specs with extra pleats. Some media sheets have a high first pass efficiency with poor capacity to hold contamination. It is a real balancing act. The best filters in the market are the filters with 100% synthetic media (amsoil / royal pruple / fleetguard / Luberfiner HD/ exc....) - most of these are large filters for commercial use. The Mobil 1 filter has a very good performance synthetic blend media, it is very good at it's price point. Most any filter out there is good enough to do the job, the dirty little secret in the industry is that a premium filter can't really be justified in the long run. Stay away from some of non name brand off-shore stuff - I have seen some that have very shoddy construction. All 4 of the major US filter manufactures make good filters, they all can be used with confidence.