Making the switch to Fram/Napa

[ZeeOSix]

To add:

Technically > and @ are not the same from a purely mathematical viewpoint, BUT in the discussion of multi-pass filter efficiency and beta ratio measurements over a range of different particles sizes, they are for all practical purposes equivalent as the particle size approaches 20 microns, as I've tried to convey multiple times with examples.

 

[zrxkawboy]

OK, greater than is the same as equals. Always has been. You win. Good job!

 

[ZeeOSix]

Originally Posted By: zrxkawboy
OK, greater than is the same as equals. Always has been. You win. Good job!

Read these two tech papers on Beta Ratios.
http://www.baldwinfilter.com/literature/english/8 Service Engineering Bulletins/95-11.pdf

http://www.baldwinfilter.com/literature/english/TechTips/201210TechTipsBetaRatios.pdf

The ISO 4548-12 test that Fram and Purolator uses measures particle sizes and particle numbers before and after the filter in real time during the test to determine the beta ratio (ie, efficiency) at each particle size they measure.

If you can't understand that, and how the test data is collected and used then you will never understand that saying a filter is "99% efficient for particles >20 microns and greater" is essentially (for all practical purposes in these discussions) is basically equivalent to saying "99% efficient at 20 microns and greater". You're obviously "locked-up" and perturbed over it all.

 

[stickybuns]

Originally Posted By: Merkava_4
Originally Posted By: leeharvey418
So... you expect to see a locked glass case at one end of the filter aisle for the Fram UGs, akin to the case for the cognac and high-end tequilas in the liquor aisle?
LOL!!

Of course yes. And, the buyer must be interviewed to determine worthiness.

 

[ZeeOSix]

If the buyer doesn't know what beta ratio is, he's sent back to the filter isle to buy a Tearolator.

 

[zrxkawboy]

Not me. They sent me to the filter aisle.

 

[Garak]

Originally Posted By: Merkava_4
Originally Posted By: leeharvey418
So... you expect to see a locked glass case at one end of the filter aisle for the Fram UGs, akin to the case for the cognac and high-end tequilas in the liquor aisle?


LOL!!

Don't laugh. K&N oil filters used to be stored at Canadian Tire in much the same way - well, inside a metal cage.