New from HPI Racing is a 4oz spray can of our specially blended Air Filter Oil. Keeping your air filter clean and oiled is essential for maximum engine protection and long engine life and now it s easier than ever. The convenient 4oz spray can is perfect for pit boxes and features a precision nozzle for easy application of the oil. The blue color makes it easy to see the oil dispersion on white foam elements. Keep a can on hand for a quick and easy way to re-oil your air cleaner.