Originally Posted By: whitearrow
so,busa the cartridge classic and the cartridge pure one have the same efficiency and filtration ratings?
Not sure about that ... I just know the cartridge filters have the 99.9% @ 40 micron efficiency rating. I'm not sure if Purolator makes a Classic and PureONE version of their cartridge filters. If so, then the response I got back for Purolator could have been for the PurONE version because I was asking about the PureONE spin-ons.
Here is an email I received from Purolator about that:
"Thank you for your interest in our Purolator filtration products. We have researched your concern promptly and apologize for any confusion the website may have caused. All cartridge filters have a 40% micron rating and very few (total of 4) spin-on filter's have the 40% micron rating."