After my 2175 mile roundtrip to the Lonestar Jamboree in Gilmer, TX, I finally opened the airbox to see what the filter looked like.

The Lonestar Jamboree was, like last year, a red dust pit. Hundreds of vehicles moving through the dry red dust at the same time, you can taste the dust in the air, and if the wind is right, you can see red dust mini-tornados. I sneezed red for a week. EvilFJ’s interior is still covered in a thick layer of it.

I was pleasantly surprised at the condition of my air filter, it was pretty clean. Some obvious use marks as can be expected on a filter, but not nearly the amount of red dust I had on there last year. As a matter of fact, no traces of red to be seen.

The air filter. No traces of red dirt noticeable.

Inside the filter was nice and clean as well.

By comparison, the cabin filter, which was changed out at the same time as the Air Filter and told a different tale.

Old Vs. New. Note the red dust.

Red dust everywhere.

In every nook and cranny. It gets everywhere!

The cabin filter got replaced, the air filter has some life left in it. All in all I say the Donaldson does a fine job keeping a lot of dust and dirt out of the intake. No dust was noticed in the airbox, and the Donaldson was emptied twice on the road trip.

The only complaint I have about it is that the sun seems to haze the clear plastic bowl.