Quote:
Here is some info on this model from Advance...
Micron Rating: > 5 mc....
Which is the equivalent of completely meaningless. Without a percent and the testing method listed that figure means nothing. Yes, the unused DW has straight pleats, but so did the two unused Purolators posted here recently.
As has been said many times before here since it's intro, the DW appears to be a well made filter. But with an unknown/unpublished efficiency it could well be nothing more than a rock catcher like the Honda A02.
As for answer from AAP, they can't find an efficiency because there is none published.