No-Toil's original air filter oil, in a aerosol can, is a super-tacky, dirt-grabbing, water-resistant filter oil that increases horsepower. It will not wash out with gas, solvents or water alone. But, you’ll be amazed at how quickly and easily your filter will come completely clean with the high concentrated No-Toil Air Filter Cleaner and water. The filter will be super tacky and ready for use quickly due to the alcohol carrier. This oil will work on both foam and fabric filters (K&N) the areosol container comes with two different spray tips one is Red and is for fabric filters (K&N), and one is white and is for foam filters.