Purolator's synthetic oil filter utilizes a 100 percent synthetic media that is custom-engineered to allow motorists to realize maximum benefits from synthetic motor oils. To take advantage of the extended life offered by synthetic oils, the filter's synthetic media holds up longer than its standard counterparts so it can continue to capture and hold the tiny particulates that accumulate over time. This allows the filter to capture and safely hold more contaminants generated over the extended life of synthetic oils without getting clogged. It can capture and safely hold 99 percent of particulates 25 microns in size or larger.