I sent an Email to the Pure Power company: I have looked at you site and have not seen anyplace where it stated the Nominal Micron or Beta Ratio of any of Your Filters???

If I wanted the Oil Filter for a Big Block Chevey I blelieve that is a 6061 Filter. What would either the Nominal Micron Rating or Beta Ratio of Your Oil Filter for that application be?

I also sent an Email to System 1 Reusable Oil Filters and the eBay Seller asking what micron level the Filters are.

I also noticed something else. When the Filter is taken apart there is an O-ring kit. I realize that for Personal use you would not change the O-rings till they are found to be leaking.

But, I think that someone useing the Reusable Filters on a Fleet of Trucks is going to replace the O-rings each time the Filter is taken apart. That is also an expense that is not mentioned.

I lost track of which seller was selling which Filter but I got an answer from one of the ebay Sellers. He said his Filter was a 40 Micron Filter.
That is not as good as normal stock Filter that run about 25-27 Microns.

I ask Him what was the lowest Micron Filter there was. He said he did not sell them but the lowest Micron one available from the company's filter he sold was 30 microns.
30 microns is not a really great Oil Filter.

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84 300D, 82 Volvo 244Gl Diesel