30,000 mile oil

[Lawrence C Leung]

Considering Teflon doesn't dissolve in oil, it's a bunch of horsepokey.
Unless it's really teflon fragments (like so many shards or is that
"chads" of teflon pipe tape) that get added to the oil. Won't help, as
most engine oiled surfaces are hydrodynamic bearings, which means most of
the lubrication is due to fluid shear and pressure, separating the
metallic surfaces. All the teflon could do is float in-between these
lubricating surfaces, potentially causing more wear, though I doubt it
could handle the pressure (so to speak). Generally, prolly harmless, but
certainly not helpful. 

The reality, as a filter media, teflon wouldn't work for oil either. It's
pores are way too small. And it's permiability rate (flow) is also too
low. It's so low that, if one was execising in Gore-Tex, it's really
quite possible to still be able to work up enough sweat that can't get
out of the Gore-Tex gear. So you're just as wet inside the gear as out. 

It was just poor geek humor. 

LL - NY

On Tue, 23 Jan 2001 20:03:49 -0500 "Fred Munro" <munrof at sympatico.ca>
writes:
>Ah yes, but the "teflon impregnated" filters are not so sophisticated 
>- or
>could it be that they are more sophisticated ? ;o) The ad text implies 
>they
>continuously add teflon to the oil to "improve" it's lubricity. As if 
>our
>buddies at F**M would make oil filters from expanded PTFE.
>
>Fred
>
>----- Original Message -----
>From: "Lawrence C Leung" <l.leung at juno.com>
>To: <munrof at sympatico.ca>
>Cc: <quattro at audifans.com>; <armanmik at n-jcenter.com>
>Sent: Monday, January 22, 2001 11:16 PM
>Subject: Re: 30,000 mile oil
>
>
>> Technically speaking (yah, engineer talk) teflon's porosity MAY make 
>it a
>> good filter. It's what makes Gore-Tex work (water vapor molecules
>> (mono-molecules) pass through, water drops (polar bonded 
>multi-molecules)
>> don't. Don't know if oil chains could pass, but I guarantee no dirt 
>of
>> circumstance would!
>>
>> LL - NY
>>
>> On Mon, 22 Jan 2001 20:15:33 -0500 "Fred Munro" 
><munrof at sympatico.ca>
>> writes:
>> >
>> >----- Original Message -----
>> >From: "Mike Arman" <armanmik at n-jcenter.com>
>> >To: <quattro at audifans.com>
>> >Sent: Monday, January 22, 2001 11:33 AM
>> >Subject: 30,000 mile oil
>> >
>> >
>> ><snip>
>> >>
>> >. Note that the oil filter is a
>> >> mechanical device, and does not affect the chemistry or 
>lubricating
>> >> properties of the oil in any significant way!
>> >>
>> ><snip>
>> >
>> >Ooh, ooh, Mike, Mike, what about TEFLON IMPREGNATED oil filters?
>> >
>> >Sorry, couldn't resist :o)
>> >
>> >Good post!
>> >
>> >Fred Munro
>> >'94 S4  122k km
>> >
>> >
>>
>