Andy,
The TP roll filter has been around many, many years.
WFO Herb
Andy Webster wrote:
> There are taxis here in melbourne (OZ not FL) taking part in an experiment
> to test the performance of a new type of oil filter. Many have done
> 250,000km (150,000miles) without an oil change and the oil is not black yet.
> The filter? A toilet roll that has been unravelled then wound up a bit
> tighter and the cardboard tube removed!
> Heard about this a couple of years ago, but nothing since.....hmmm.
> Andy
>
> >From: "Geoff Branch" <branch@valinet.com>
> >Reply-To: "Geoff Branch" <branch@valinet.com>
> >To: "Nory P" <nory_midget@yahoo.com>, <RBHouston@aol.com>,
> ><JStock0540@aol.com>, <spridgets@autox.team.net>
> >Subject: Re: oil addatives
> >Date: Thu, 3 Jun 1999 13:39:35 -0400
> >
> >Three years ago my boss sent me to the University mechanical engineering
> >library to research any and all information on oils and additives. At the
> >time we were trying to extend the oil change intervals on some 850HP
> >natural
> >gas engines we run. In a nutshell, what I learned was that PTFE (*eflon)
> >cannot possibly "bond with the metal" ( the claim of the snake oil
> >salesmen)
> >of a combustion chamber because the temperatures are way to low. Remember
> >that teflon is used as a high temperature anti friction compound. You can
> >add things to your oil to increase the Total Base Number and decrease the
> >Total Acid Number as these wear out, but this is not practical on a 4 qt.
> >sump. In fact it's not even practical on our 43 GALLON sumps!! Also, in a
> >liquid fueled engine, the oil becomes polluted (oxidation and nitration,
> >etc.) long before any of the additives break down. Anyway...these lead us
> >to the conclusion that changing the oil is the best protection, and the
> >cheapest. We currently run 2,000 hours between changes with straight 40
> >weight oil.
> >
> >Geoff Branch '74 Meejut "Yellow Peril"
> >-----Original Message-----
> >From: Nory P <nory_midget@yahoo.com>
> >To: RBHouston@aol.com <RBHouston@aol.com>; JStock0540@aol.com
> ><JStock0540@aol.com>; spridgets@autox.team.net <spridgets@autox.team.net>
> >Date: Wednesday, June 02, 1999 12:56 PM
> >Subject: Re: oil addatives
> >
> >
> > >
> > >
> > >I know everybody puts down these additives and says
> > >they're a waste of money, but I'd like to relate a
> > >short story:
> > >
> > >The postman where I used to work had a Midget (bought
> > >it new in the UK while he was in the service, and
> > >shipped it home when he got out). Not long after
> > >Slick 50 came out, being impressed by the TV
> > >commercials, he added some with his next oil change.
> > >He apparently did not tighten the oil filter enough
> > >and, the next day, it began to leak. The leak didn't
> > >seem too serious, so he opted to drive the car to work
> > >(and back) that day, planning to fix it when he got
> > >home that night. Well, the leak got much worse,
> > >unbeknownst (love that word) to him, and by the time
> > >he got home and checked out the situation, he found he
> > >had no oil left at all! He had no idea how long it
> > >was running without oil, but he attributes the lack of
> > >any engine damage to his use of Slick 50 (just like
> > >the commercials said!).
> > >
> > >I, personally, don't use the stuff and never have, but
> > >when someone tells you of an experience like that, you
> > >wonder if maybe it wouldn't be worth trying, just to
> > >be on the safe side.
> > >
> > >YMMV
> > >===
> > >
> > >***The above address is for list purposes only. Please send private
> >e-mail, as before, to Nory@webtv.net
> > >-----NORY
> > >http://www.geocities.com/SiliconValley/Way/9101
> > >Don't assume that because you have found one problem, you have found the
> >ONLY problem.
> > >
> > >
> > >
> >
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