----- Original Message -----
From: "Larry Carman" <lncarman@swbell.net>
To: <VE6TR@telus.net>
Cc: <amps@contesting.com>
Sent: Tuesday, February 28, 2006 6:10 PM
Subject: Re: [Amps] Vegetable oil dummy load
>
> According to Vectronics, motor oil does not have a sufficiently high
> vaporizing temperature and will cause excessive vapor.
>
> I found the following quote on eHam:
> Motor oil is not recommended (at least not for long term use,) as the
> volatility and flash point is often lower than mineral oil, and the
> additives will corrode the structure of the resistor used in the dummy load.
> (ARRL Handbook, 1988, CHapter 34, page 22-23.)
>
> I was once told that there was a brand of motor oil without additives that
> Worked very well in dummy loads. I have no idea what brand it was.
>
I'm just guessing here, but I would not be surprised if it were Marvel Mystery
Oil.
Mike k1ern
> Regards,
> Larry N5BIP
>
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