What do you think? Should I change it? lol

As the disco has been parked on my drive for a couple of months while I've been welding it all up getting ready for the winter season, I've decided to take a look at the air filter....
I knew it would be bad as we havent had any rain and I've spent a good 4 months driving on the plains with dust everywhere, so I bought a new one before hand....

what do you think? should I replace it or leave the old one in? :doh:

jp keep old one in you will only make new one dirty lol