Reviewed By MICHAEL W (Sacramento, CA) Reviewed for a 2004 Dodge Ram —9/29/2007 11:12 AM
I work in diesel field repair, farm, heavy equipment, and eletrical generators. The dust conditions are extreme. The pre filter helps filter out the larger dust particles. I was cleaning the air filter on my service vechile once a week. I hope to go to once a month. Just to give you a idea of the dust conditions. Most air filters on the farm and heavy equipment are cleaned daily. With the cost of fuel clean filters are a must in my business.