I had it installed at the dealer shortly after purchasing the car (had it included in the car's price and went back when the part was in). How often to I need to clean it? I guess it came with some sort of cleaning solution to mix with water to clean it. But I didn't see anything on how often to do this. Is it just the same maintainance interval as the regular air filter (somehow I doubt . . . )? Thanks.
Alexi
Alexi