Purolator Classic oil filters contain multi-fiber, high-density
media that keeps the dirt and grime out of the oil and out of the engine.
Just how much dirt and grime does the Purolator Classic trap? An amazing
97.5%*, making it the most filter for the money. And the Classic's performance
is proven under the Society of Automotive Engineers multi-pass test, the only
test that simulates real-life driving conditions.
*Based on ISO 4548-12 at 20 microns on PL30001