I'm sure a Wix or something will be better on micron rating, but it seems pointless really.This is true. What makes me wonder is whether a high quialit aftermarket filter with a better micron filtering rating is better to use than the OE Toyota filters. The aftermarket filters may filter better but what if the bypass valves aren't really calibrated to what Toyota specifies & are allowing unfiltered oil to bypass due to the much more efficient filtering of the media.
People stick with Denso-Toyota filters and there aren't any problems, ever.
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