Originally Posted By: JB357
Originally Posted By: ZeeOSix
Originally Posted By: JB357
I know the Pure 1 is rated at 99.9% @ 20 microns and the Amsoil Ea oil filter is rated at 98.7 @ 20 microns.
I wonder if the Pure 1 really does filter 99.9% @ 20 microns, if so I have not seen any full flow filter with higher filtering efficieincy.
It depends on what Purolator filter number you're talking about. There are a few spin-ons and all the cartridge filters are rated at 99.9% @ 40 microns instead of @ 20 microns.
On the Purlator site it says the Pure 1 filter filters to 99.9% efficiency with an asterisk that at the bottom of the page says *Based on ISO 4548-12 at 20 microns on PL30001. So what they are saying is only one of their Pure 1 filters meets this spec? I guess that is what they are saying. So are the rest of the Pure 1 filters only 99.9% efficent @ 40 microns? Pretty mediocre efficiency.
Through investigation over the last few years, it has been determined that only the 4 smallest spin-on filters have the 99/9% @ 40 microns rating ... it's right on the filter's box if you read carefully. All others have the 99.9% @ 20 microns on the box. It's the 14610, 14612 and a couple others I don't recall off hand.
What Purolator filter number is used on your vehicle?
Originally Posted By: ZeeOSix
Originally Posted By: JB357
I know the Pure 1 is rated at 99.9% @ 20 microns and the Amsoil Ea oil filter is rated at 98.7 @ 20 microns.
I wonder if the Pure 1 really does filter 99.9% @ 20 microns, if so I have not seen any full flow filter with higher filtering efficieincy.
It depends on what Purolator filter number you're talking about. There are a few spin-ons and all the cartridge filters are rated at 99.9% @ 40 microns instead of @ 20 microns.
On the Purlator site it says the Pure 1 filter filters to 99.9% efficiency with an asterisk that at the bottom of the page says *Based on ISO 4548-12 at 20 microns on PL30001. So what they are saying is only one of their Pure 1 filters meets this spec? I guess that is what they are saying. So are the rest of the Pure 1 filters only 99.9% efficent @ 40 microns? Pretty mediocre efficiency.
Through investigation over the last few years, it has been determined that only the 4 smallest spin-on filters have the 99/9% @ 40 microns rating ... it's right on the filter's box if you read carefully. All others have the 99.9% @ 20 microns on the box. It's the 14610, 14612 and a couple others I don't recall off hand.
What Purolator filter number is used on your vehicle?