While dealing with the next pending car chores, I thought I would give WIX a try and took Amzoil up on one of those oil change kits. However, as you can see, this might not work out. I'm not sure if this is normal? Some of the so called holes or slits are not all the way open.
Above is a store purchased WIX XP filter and most louvers look ok.
The filter sent to me by Amsoil with the oil change kit a #57060 filter. Does not look as wide open as the store purchased WIX XP and many seemed not opened at all along the top and bottom of the filter core. I dangled a tiny mirror to see the louvers facing the other direction and it was about the same number not fully opened. This looks wrong right?
The louvers look like thin knife cuts and I counted around 23 columns by 8 pairs of holes average for my model filter and comes to 368.
The slits seem to average to 0.4mm wide and a length of 2.2mm, that would give a respectable 32 sq. mm of openings. The thinnest are less than 0.1mm and my method to measure is a plastic feeler I made and check with a micrometer.
It could be fair to say that it roughly measures to about 11-12 square millimeters total of oil passage space or the size of a two pencil sized holes and that means more than 2/3rds holes are under sized? The store purchased one would calculate to about 40-54 square millimeters. The inlet holes might be about 18-22 square millimeters. My general logic is that it should at least be slightly bigger than the inlet?
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