[GreenKeys] Teletype Oil (Ad Nauseum)

[Gerry Block]

You can get non-detergent mineral oil at any aviation maintenance hangar.  Its 
cheap.   It is used for engine break in.

Gerry
AD6MC




________________________________
From: Richard Knoppow <1oldlens1 at ix.netcom.com>
To: Jim Haynes <jhhaynes at earthlink.net>
Cc: GreenKeys at mailman.qth.net
Sent: Wed, August 17, 2011 3:10:35 PM
Subject: Re: [GreenKeys] Teletype Oil (Ad Nauseum)


----- Original Message ----- 
From: "Jim Haynes" <jhhaynes at earthlink.net>
To: "Richard Knoppow" <1oldlens1 at ix.netcom.com>
Cc: "Bruce Gentry" <ka2ivy at verizon.net>;
<GreenKeys at mailman.qth.net>
Sent: Wednesday, August 17, 2011 1:58 PM
Subject: Re: [GreenKeys] Teletype Oil (Ad Nauseum)


> One of the questions I don't know the answer to: In KS7400
> there was some
> volatile substance that gave it the distinct aroma, and in
> 3-in-1 it
> is citronella.  Is the volatile component there solely to
> give the mixture
> a trademark odor?  Or does it have a function, such as
> helping the oil to
> get into tight places and then evaporating to leave the
> oil behind?
>
> In some early document that I can't find right now
> Teletype specifically
> said not to use 3-in-1 oil.  I guess that stuff has been
> around for a
> long time.  Perhaps it is too thin.  I've been using
> 3-in-1 large motor
> oil, which is in a blue and white can rather than the red,
> white and black
> can, and is 20 weight.  It used to be said that automotive
> engine oil
> should be non-detergent, as the detergent would make all
> the parts turn
> green.  I've used detergent oil in a pinch and have not
> had anything
> turn green, so maybe detergents have changed.
>
> I have had some former Western Union machines with
> selector trouble, and
> when I took the separator plates apart there was a green
> varnish-like
> substance on them.  I don't know whether W.U. used some
> oil of their
> own formulation that led to the problem, or whether it
> occurs with
> KS7400 oil.
>
      I believe regular 3 in 1 oil has a solvent in it so it
changes viscosity with age. 3 in 1 also sells regular SAW 20
machine oil under its brand. This is _not_ the same stuff as
the regular 3 in 1 and seems to be perfectly satisfactory
for small motor bearings and similar applications. I have no
idea what gives 3 in 1 its odor but it does not smell like
Citronella oil to me. I grew up with Michigan mosquitoes and
chiggers and we wore Citronella to keep them off. Actually,
I think it attracted them.
      Nye sells very highly refined oil in several
viscosities. More expensive than 3 in 1 and will probably
have to be ordered via the web (see Tai Oils for small
quantities) but is superior stuff.
    Also, I think the detergent in motor oil is supposed to 
prevent the generation of "lacquer" from heating of various 
substances from combusion. I don't know if it works at lower 
temperatures. Also note that if you decide to use motor oil 
the synthetics may be slipperier and longer lasting.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com

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