I bought a new 14" K & N air filter last year for the Duster. I liked the reddish color of it and it seems to work well. Used it all last year and uncovered the car to get it ready this year and the filter isn't reddish any more. My question is if I use the cleaning kit on it with the solution and the oil, will that bring back the reddish color of the air filter. Has anyone used this solution and does it restore the filter to new. Thanks