aFe MagnumFLOW Pro DRY S OE Replacement Filter Cadillac CTS-V 09-15 V8-6.2L (SC)Pro DRY S Air Filter Media: This filter features three layers of progressive media to provide maximum flow with excellent filtration. The progressive layering of media allows the filter to flow at high levels even when dirty. The Pro DRY S non oiled synthetic air filter requires no oil after cleaning for maximum convenience. Rounded Open Pleats: aFe performance air filters use a rounded, evenly spaced pleat design which allows for more usable filter