Air filter??

[Dietoremain]

So I have a stock air box and live on a dirt road(well DG now better than the crap under it) whats the best drop in filter for me and how often you think I should change it?

[NCHornet]

Dirt = death to a diesel engine, how much is your engine worth to you? If you want the best filtering element look no further than the Ford AIS, same filter that saved our Humvees and nother equipment during desert storm when they were all stopping in their tracks because the fine sand was bypassing traditional filter elements. Plus it flows 30% more air and can last to 50K. My UOA reports prove how well it works, my silicon levels are usually below 5 and I drive on a lot of gravel and dirt roads. The AIS will run $200, cheap compared to the cost of a dusted engine!! A typical drop in filter just can't come close to filtering all that dust out. If you are dead set on staying stock I would use Wix filters.

NCH

[Dietoremain]

I'm a bit on the broke side but i'd definitely consider that when the $ comes around.. anyway yes i've heard great things about wix filters. thanx for the tips man.

[DSTRBD]

The stock airbox is the main problem, it lets a ton of dirt past because it doesnt seal all that great. I suggest going with an S&B intake kit. This way, you will never have to buy another filter as long as you live. The flow and filtration numbers are also some of the best on the market. Here is a link with more info and a pic.

S&B 99-03 7.3L