Quote:
Originally Posted by martureo
Dude, you're the reason why we can't have nice stuff. You'd tell an expert who invented a certain technology that your opinion held as much weight as theirs.
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You manufacture an Oil Filter for my 84 300D. A forum member posts pics of some filter he has cut apart and finds that the bypass oil filtration of the oil filer has a lot of plant crap other then cotton in it.
So you cut a few filters apart and look for yourself and the Member was indeed right.
You right to 5 filter makers asking them what level of filtration the upper bypass Oil Filter section has. A few answer back and you find out there is zero spec on that. All they say is they are using filler material that the manufacture allows (accept that actual observation shows some filters have not much crap and others have a lot more crap in them and in some the packing is loose and in other it is firmly packed).
With zero micron level of filtration specs. Your an engineer. If you you don't have a spec how do you do quality control? The conclusion is the bypass Oil Filter section has no quality control as to how well it will actually filter.
Now in your case I have read of no test comparing the Fram Washable Filter I am using any disposable filters. What that means is you have a lot of innuendo with no facts to back you up.
Deliveryvalve list of oil filter microns. Note that all filters are not created equal or there is a large variance in the makers testing. Why said that the disposable Air Filter by different makers for the same vehicle might not all filter to the same micron level.
NAPA Gold Filters - Page 3 - PeachParts Mercedes-Benz Forum
The Filter makers do know what the full flow section filters down to.
M-shop is this forum which used to be called mercedesshop.
Anyways. Here is the problem I have besides the waste cotton issue.... Micron ratings....
Wix -
Full flow section 32 microns.
Noted here by M-shop member moonlite in this post and this post2.
No bypass section.
Mann-
Full flow section 27 microns
Noted here by M-shop member SUNRG in this post3
By pass is undetermined
Fram -
Full flow section 25 microns
Note by M-shop member moonlite in this Post4
By pass is undetermined.
Mahle -
Full flow section 22 microns
Noted M-shop member moonlite on this Post5
By pass is undetermined.
Baldwin -
Full flow section 18 microns
By pass section is 15 microns
Baldwin/Hastings is the only company that knows what the by pass section filters down to and also has the best filtration in the full flow section.
Just going throw this in. Industrial Air Filters, meaning not for vehicles do have micron ratings.