Originally Posted By: dnewton3
Originally Posted By: steveh
Originally Posted By: Motorking
Hi,
I work at FRAM as the tech director. WIX anything simply does not even come close to the filtering efficiency of even the least expensive FRAM filter. The best WIX can do is mid 80% efficiency @20 microns. The WIX XP is far worse at near 50% (this info from BITOG members who have contacted WIX).
FRAM is the largest OE filter supplier in the world making filters for Ford, GM, Honda, Subaru, Porshe and many others. Filer efficiency is from 94.7% for EG to 99+% @ 20 microns for TG and Ultra. That said, at 4k OCI's, any decent brand name filter would be fine for you.
If the best Wix can do is mid 80% and Wix claims 95% why doesn't Fram have them in court???
Agreed - I'd like to see the credible data from the actual testing whereas Fram can claim Wix "best" effort is only mid-80% at 20um. I want to see the actual video, or see a certified, independent lab report with signed notary testament.
I will note, his (motorking) statement about "mid 80% efficiency" can be interpreted two ways ...
either mid-80% would mean 80.4 to 80.6 %
or mid-80% would mean 84% - 86% (this is more likely what he meant)
Still, 85% is not anywhere close to the Wix claim of 95% beta, and if Fram is going to throw that out there as a statement, I want to see the credible basis to make such an accusation.
Here's a possibility. Since WIX never says what test standard was used to achieve their efficiency numbers, it could be that it was not ISO 4548-12. Using different test procedures could yield different efficiency numbers.
The "mid 80s @ 20 microns" might be what the WIX filters test out at when using the ISO 4548-12 test standard. If Fram did their own in-house test on competitors filters, they would most likely be using ISO 4548-12.
Has anyone actually found out what test standard WIX is using?