DryTech Air Filters - Engineered for maximum performance with zero hassle, our DryTech Filters delivers nearly 98% filtration efficiency with zero mess. Completely oil-free and ultra-low maintenance, DryTech Filters are completely maintenance-free for up to 50,000 miles. When it’s time to clean, simply vacuum the outer surface for light to normal cleaning or rinse with soap and water then allow it dry for deep cleaning, then you’re back to peak efficiency. DryTech Filters are pure performance, mess-free and built to last.