How do you clean yours?

Mines looking rather dirty at the moment, bits of stone, dust, dead flies etc etc between the fins.

Do i take it off the car and apply a jet wash to it or is there a more subtle way of doing this?

thanks

Chris

 

So nobody has done this ever?

 

Blow it from the inside out using an airline, or submerge it in water and swill it around. Then shake it out and let it dry out!.