Purolator Synthetic is a new oil filter featuring 100 percent synthetic media that is custom-engineered to allow motorists to realize maximum benefits from synthetic motor oils. Specifically, Purolator Synthetic utilizes 100 percent synthetic media with pleat support technology containing wire backing that is engineered for today’s high-tech engines. The result is a filter that has substantially more capacity than conventional oil filters. This allows the filter to capture and safely hold more contaminants generated over the extended life of synthetic oils without getting clogged. At the same time, Purolator Synthetic features 99 percent efficiency, which means that it can capture and safely hold 99 percent of particulates 25 microns in size or larger. A micron is a millionth of a meter.