Here is some information I just received from Fram about their X2 oil filters. The numbers look pretty good though. Don't know anything about their internal construction. Anyone have any further information?
Thanks,
The 96% efficiency rating is the Single Pass Efficiency per SAE HS806 using 10 - 20 micron glass beads. I will admit you
have to look pretty hard on the packaging to see this reference. It's in the small print below the larger 96% Single
Pass Efficiency printing.
Thank's for contacting us on this point. I have seen some competitive packaging that states 96% Multi-pass Efficiency
"based on SAE test" and I couldn't find any other reference to what actual test was run.
Some competitors call the Weighted Average Efficiency" test in SAE HS806 the "Multi-pass" or "Mutiple-pass" test which
is misleading. This is actually the "Weighted Average Efficiency" test and measures the efficiency after all the
contaminant circulates through the filter many times over the course of a 6 to 10 hour test. In the Single Pass test
the contaminant only passes through the filter once.
The true Multi-pass test is per SAE J1858. It measures the efficiency at various particle sizes during the test. The X2
filter has a 94% efficiency at >20 microns. The numbers don't correlate exactly with the Single Pass Efficiency test
because the contaminant is different (not spherical, more like short logs of various sizes from 5 - 80 mrcron long).
Thanks again for asking for the details so you can make a more informed decision. I hope you will continue to consider
FRAM filter products.
Regards,
Gary Bilski
Manager, Filter Engineering
Honeywell Consumer Products Group
[ November 14, 2002, 10:42 AM: Message edited by: westex39 ]
Thanks,
The 96% efficiency rating is the Single Pass Efficiency per SAE HS806 using 10 - 20 micron glass beads. I will admit you
have to look pretty hard on the packaging to see this reference. It's in the small print below the larger 96% Single
Pass Efficiency printing.
Thank's for contacting us on this point. I have seen some competitive packaging that states 96% Multi-pass Efficiency
"based on SAE test" and I couldn't find any other reference to what actual test was run.
Some competitors call the Weighted Average Efficiency" test in SAE HS806 the "Multi-pass" or "Mutiple-pass" test which
is misleading. This is actually the "Weighted Average Efficiency" test and measures the efficiency after all the
contaminant circulates through the filter many times over the course of a 6 to 10 hour test. In the Single Pass test
the contaminant only passes through the filter once.
The true Multi-pass test is per SAE J1858. It measures the efficiency at various particle sizes during the test. The X2
filter has a 94% efficiency at >20 microns. The numbers don't correlate exactly with the Single Pass Efficiency test
because the contaminant is different (not spherical, more like short logs of various sizes from 5 - 80 mrcron long).
Thanks again for asking for the details so you can make a more informed decision. I hope you will continue to consider
FRAM filter products.
Regards,
Gary Bilski
Manager, Filter Engineering
Honeywell Consumer Products Group
[ November 14, 2002, 10:42 AM: Message edited by: westex39 ]