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· Premium Member
2022 Forester Limited 2018 Forester XT
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The only oil filter that puts out numbers is Fram Ultra Synthetic its 99% @20 microns. Mobil 1 says 99% at greater than 30 microns so that is probably 99% @ 40 microns which is what most filters are.

When I saw that I removed my Mobil1 filter with a couple hundred miles and installed the Ultra.
 

· Premium Member
2022 Forester Limited 2018 Forester XT
Joined
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16,718 Posts
Using a 15 micron engine vs 40 micron reduces extend engine wear by two and a half times. People fret all the time about their cars and poo poo this info....whatever
 
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