For anyone that might have any reservations about Donaldson air filters, they made the first diesel air filters and have been in business over 100 years growing to a worldwide company with over 2 billion in revenue last year. They have achieved this by spending on research and by being innovative in the filter business creating a filter media that is superior.
The two jobs of the air filter is to remove as much of the dirt of all sizes as possible and to do that job without plugging up and restricting air which is measured by the contaminant loading filter capacity. The Donaldson Blue filters with ultraweb do that job by holding the bulk of the larger particles above the main high capacity fine nanoweb mesh structure. There is no better air filter on the market that I can find of any brand. Cat has some blue colored air filters that may be made by Donaldson, but I am not sure.
All the white air filters of any brand typically use some form of cellulose mesh. The graphs in the attachment compare the range of performance of cellulose filters available to remove particles as well as the capacity of those filters compared to the Donaldson filters with blue ultraweb media. Dirt is wear and these engines pull a lot of air. There have been times, like when we visited the Boron/Borax mine in CA, while driving the access road I could not see the rear of the coach due to the clouds of fine dust. We drove thirty miles of road repair that was down to dirt in Montana, the whole time in clouds of dust. You never know what the driving environment will throw at you.
Compare the blue nanoweb media performance with the range of the white cellulose filters on the two graphs in the attachment. I have no bias toward any brand, I use whatever filter is the best for the job at hand. I use Cat high efficiency brand for oil and final fuel filters because Cat built a superior filter. As far as air filters Donaldson has spent the money to create a superior product that simply does a better job.
Later Ed
