Found this review on Amazon by Norbert M Assion:
Quote:
Because of doubts on the filters claimed 99% efficiency and claimed unbeatable extraordinary filter performance far beyond the capabilities of traditional filters, the filter has now been tested again after SOMS refused since 2013 to prove its assertions with results of carried out tests. In fact the filter does not meet the promised expectations. The filters real efficiency is 99.65% @ 40 microns and 81.78% @ 20 microns (ISO 4548-12 multiple pass) and is thus merely an average filter. With claiming 99% efficiency and without disclose also the rating number, the customer is deliberately misled and deceived. The filter purchaser believe and trust that the filter would capture 99% of all harmful particles. However, it is also true, until 2012 the oil cleanliness performance of all SOMS spin-on filter models was unrivaled. Then SOMS altered the original licensed design because of economic reasons, and the filter performance collapsed since then. The filters full-flow media as well as its micro filter media were evaluated as Absolute Rating 20µm. Usually a 20 micron rated filter makes it impossible to capture large numbers of particles substantially smaller than 20 microns. Consequently a lot of these harmful particles remain in the oil. Undoubtedly roughly the same is happen with the spin-on filters of below listed brands:
Bosch: 99.0% @ 20μm, Pennzoil: 97.0% @ 20μm, Purolator: 99.0% @ 20μm, Mobil-1: 99.6% @ 25μm, Royal Purple: 99.0% @ 25μm, WIX: 99.0% @ 25μm. (Source: Providers documents) And for comparing: The efficiency of SOMS Spin-on filter models before 2013 was 99% @ 5µm after 10,000 road miles additional testing and not only after some 45 minutes labor testing at ISO 4548-12 multiple pass.
Questions? Norbert M. Assion / [email protected]
https://www.amazon.com/microGreen-MG-421-8-Oil-Filter/product-reviews/B007USGLCQ
Who is Norbert M Assion?
Well he holds patents on the hybrid filter, worked with two others at SOMS Technologies where it was developed, has an article in Machinery Lubrication about the hybrid filter and was one of the authors of this paper:
http://www.wsppn.org/pdf/fleets/SOMS_Clean_Technology_2009_Abstract_Submission.pdf
Looks like there was a falling out. Nevertheless, it seems like the lack of information from Microgreen has been explained.
Quote:
Because of doubts on the filters claimed 99% efficiency and claimed unbeatable extraordinary filter performance far beyond the capabilities of traditional filters, the filter has now been tested again after SOMS refused since 2013 to prove its assertions with results of carried out tests. In fact the filter does not meet the promised expectations. The filters real efficiency is 99.65% @ 40 microns and 81.78% @ 20 microns (ISO 4548-12 multiple pass) and is thus merely an average filter. With claiming 99% efficiency and without disclose also the rating number, the customer is deliberately misled and deceived. The filter purchaser believe and trust that the filter would capture 99% of all harmful particles. However, it is also true, until 2012 the oil cleanliness performance of all SOMS spin-on filter models was unrivaled. Then SOMS altered the original licensed design because of economic reasons, and the filter performance collapsed since then. The filters full-flow media as well as its micro filter media were evaluated as Absolute Rating 20µm. Usually a 20 micron rated filter makes it impossible to capture large numbers of particles substantially smaller than 20 microns. Consequently a lot of these harmful particles remain in the oil. Undoubtedly roughly the same is happen with the spin-on filters of below listed brands:
Bosch: 99.0% @ 20μm, Pennzoil: 97.0% @ 20μm, Purolator: 99.0% @ 20μm, Mobil-1: 99.6% @ 25μm, Royal Purple: 99.0% @ 25μm, WIX: 99.0% @ 25μm. (Source: Providers documents) And for comparing: The efficiency of SOMS Spin-on filter models before 2013 was 99% @ 5µm after 10,000 road miles additional testing and not only after some 45 minutes labor testing at ISO 4548-12 multiple pass.
Questions? Norbert M. Assion / [email protected]
https://www.amazon.com/microGreen-MG-421-8-Oil-Filter/product-reviews/B007USGLCQ
Who is Norbert M Assion?
Well he holds patents on the hybrid filter, worked with two others at SOMS Technologies where it was developed, has an article in Machinery Lubrication about the hybrid filter and was one of the authors of this paper:
http://www.wsppn.org/pdf/fleets/SOMS_Clean_Technology_2009_Abstract_Submission.pdf
Looks like there was a falling out. Nevertheless, it seems like the lack of information from Microgreen has been explained.