It might be this hour long video from a year ago with the Donaldson Filtration guy, that discussed particle size vs engine wear and life expectency. Anyway, for modern engine clearances, the particle size range is 3-20 microns that will cause wear, depending what the "particle" is. You can take something like 100,000 miles off a 200,000 mile engine running a rock catcher oil and air filter in a dusty area (silicon sand particles are abrasive like grinding wheels) constantly.
Bigger particles can't get into the machine clearance space, smaller particles pass through the space. So filters with crappy filtration efficiency below 20 micron aren't doing much good, is the point.
So the point is, try to use a high efficiency filter that has enough surface area not to plug and go into bypass before your oil change interval. Use a synthetic media, because it has less flow restriction due to more uniform media pore size.
And always replace the filter with the oil because you don't know when it is full of dirt. The only way to know is a differential pressure meter that tells you when the filter needs to be changed. They use those on higher value machines.
We are joined by the guys at Donaldson Filters for deeper dive into air, fuel and oil filters.RELATED VIDEO LINKS:Air Filters - https://youtu.be/0flEIBOTYrEF...
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