However, to maintain this level of filtration, the filter element needs to be changed every 10,000 miles. Filtration Solutions also says you should change your spin-on filter once a year. A filter element costs $27, versus changing your oil and filter at $76 (Rotella T Synthetic).
Oil feed to the filter comes from this pressurized oil gally port on the driver's side of the engine block.
Oil return to the engine goes into this custom aluminum cap, which replaces the stock oil fill cap. This allows clean oil to filter down through dirty engine components before it returns to the sump, where it will soon begin the filtration process again.