K&N air filter refresh

So after my 900 mile trip to Edinburgh and back my K&N air filters are looking a little dry.

Halfords do the necessary refresh kit for £12. It comes with a cleaning fluid and an oil spray. 

First thing is to remove the air filters by undoing the securing nuts that hold the outer plates in place (8mm spanner).

Ooh, naked Jenveys look great !

Having picked off the assorted collection of flies and wasp carcasses I used the oil spray to coat all the way around the filters and let them dry for 20 minutes before refitting.

Now they have the proper salmon-red colour.

There's lots of oil spray left to do this again. May use the cleaner fluid next time.