aFe MagnumFLOW Air Filters OER Pro Dry S A/F 16-17 Cadillac ATS-V V6-3.6L (tt)Pro DRY S Media: These filters features 3 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 oils for cleaning for maximum convenience. Rounded Open Pleats: aFe performance air filters use a rounded, evenly spaced pleat design which produces more usable filter surface area for