WHY ANOTHER FILTER?  Even the best full flow-filter can't do it all.

Any full flow filter must allow oil to pass through it quickly to keep the engine from starving for oil.  Advances in auto technology and more compact engine designs place increasing demands on these filters; to keep from creating a circulation bottleneck they filter out only the coarser particles, and feature relief valves that open when the engines demand for lubrication can't be ignored.