Managed to find this on a google search
PUREOIL
EXECUTIVE SUMMARY
Automotive, 0259- PUREOIL – Oil Purifying unit for combustion engines, USA, Utah $1
Pureoil has developed a purifying unit small enough to fit in the palm of your hand and mounts between the engine and stock oil filter on an internal combustion engine.
The oil flows through the PUREOIL unit and the filter in the same manner as if just the factory filter was in place. The oil to be purified is diverted to the unit through the use of a simple metering system, which metering system slows the flow of oil through the oil purifier to a rate of two gallons per hour for an automotive unit, or 8 gallons per hour for a commercial truck unit. This slow rate is necessary for the second stage of the process. The second stage removes the volatile contaminates in the oil. This proprietary oil purifying process is very similar to those used by large refineries for preparation of oils for general use. The Oil Purifying Chamber is evenly and thoroughly heated by the hot engine oil, thereby efficiently utilizing the already heated oil to assist in the evaporation of the volatile from within the oil. The volatile vapors are quickly vented through the vapor vent while the purified oil returns to the engine.
This process assures continuously clean oil delivered to the engine, which maintains the oil in a pure state, virtually eliminates oil changes, and greatly reduces engine wear.