I was researching the micron ratings of oil filters and came across this disturbing information on the WIX filter site (http://www.wixfilters.com/productin...oilfilters.html):

"Particle size retention is the measure of the degree to which the filter can retain particles of various sizes. Wix has developed optimum particle size retention quality in filter media by extensive engine wear tests including exhaustive testing of filters used in racing, and sophisticated laboratory tests. Wix media in the automotive full-flow oil filter is able to trap and hold essentially all the contaminant particles larger than 25 microns. (A human hair measures approximately 70 microns in diameter. An object that is 1 micron in size is .000039 inches in diameter.) Our filters also capture a high percentage of even smaller particles."


ONLY 25 microns? And WIX is supposedly one of the better filter manufacturers. I was expecting something on the order of 5-10 microns for lube oil filtration.

Anyone have any other filter specs?


Regards all,
R Leo

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