Many years ago I had a talk with an Exxon-Mobil filter engineer. This was not about car filters. It was about industrial oil and industrial filters. At the time he indicated that better filters were fiberglass bc they utilized "depth" vs "surface" filtration. And he indicated that Mobil 1 filters used fiberglass. Now this was 22+ years ago.
Fast forward-I looked through the last 10 pages here. It appears that Mobil1, Fram Ultra, and K&N appear to have the thickest media. Possibly indicating it is fiberglass depth media. Since I have a new XT(Turbo) Forester, for a few extra dollars I would like the best filter available. Realizing that engine life probably will not be affected by any filter I use....I still want the "best". Yes I could go bypass. But I don' like going that route.
Thoughts?
Fast forward-I looked through the last 10 pages here. It appears that Mobil1, Fram Ultra, and K&N appear to have the thickest media. Possibly indicating it is fiberglass depth media. Since I have a new XT(Turbo) Forester, for a few extra dollars I would like the best filter available. Realizing that engine life probably will not be affected by any filter I use....I still want the "best". Yes I could go bypass. But I don' like going that route.
Thoughts?
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