Originally Posted By: glenncof
Originally Posted By: Drew99GT
Originally Posted By: va3ux
Originally Posted By: glenncof
The ToughGuard is "darn" good filtration and should be considered at the right price.
Every filter has its trade-offs but this one, at least on filtration, is right up near the top.
Where did you ever get a notion like this ?
Fram claims 99% multipass efficiency for the Toughguard. Something like a regular Purolator is only 96%, and a regular Fram is only 94%.
As I recall the ToughGuard box (TG2) specifies SAE J1858 (multipass) procedure 10-20 microns, let's call it 99% @ 15um nominal. I consider it in the PureOne and M1 class for tested filtration.
As a benchmark: WIX 51372 equivalent betas are 2/20=12/25, which as I understand means 50% @ 12um and 95% @ 25um.
The PureONE is tested via the ISO 4548-12 procedure according to Purolator.
From Donaldson:
Quote:
Testing Standard
The ISO 4548/12 multi-pass test is a widely accepted industry standard
test used by OEMs for the purpose of evaluating and comparing the
effi ciency and capacity of liquid fi ltration products.
Test results are an average from the testing of three product samples in
accordance with ISO 4548/12 specifi cations. The ISO 4548/12 specifi es ISO
12103 test dust. Test data reported at 25 psid terminal restriction point.
Diesel engine filters are all tested at 10-microns using this procedure. Automotive filters seem to be tested at whatever rating gives the best number