[Healeys] Magnetic drain plugs & 1 1/2 inch meters?

[Awgertoo at aol.com]

John--

I find this statement on the site:

    N -0.12 176:F (80:C) 590:F (310:C) 7.7   NM -0.12 212:F (100:C) 644:F
(340:C) 7.7   NH -0.11 248:F (120:C) 644:F (340:C) 7.7

I am not sure that this is saying the magnet "loses its magnetic
properties" at those temps but neither engine, transmission or differential
oils
should ever get to 248 degrees so assumedly using an "NH" magnet would be a
safe bet.

But going back to the site I cannot find out what are the specs (size) for
an NH magnet.  The site contains a lot of info but I can't figure out this
piece of info--do you have any idea?

Best--Michael Oritt
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In a message dated 10/22/2009 3:38:54 P.M. Eastern Daylight Time,
ahbn6 at verizon.net writes:

I just  bought one but the literature that comes with it states that the
magnet  loses its magnetic properties at 175 degrees F. Would this cause a
problem  of itsy bitsy metal particles then being able to  recirculate?