Angier -
If it's the mag gasket that's leaking, Dow Corning #4, both sides of the gasket, is the indicated (and preferred) sealant.

Neal George
Sent from my iPhone

> On Sep 15, 2014, at 8:42 PM, "Jay Phillips" <jayph@fastairplane.net> wrote:
>
> I don't know what engine you have, but Continental says 'thou shalt not use
> permatex'.
>
> When you squeeze parts together with liquid gasket material, some of the
> excess material goes out (where it can be wiped off), and some of it goes
> inside (where it can't be wiped off). If this material breaks loose and
> finds its way to an oil passage, you will end up with "less than optimum"
> lubrication.
>
> Assuming you have a Continental engine, look for  Continental SIL99-2B,
> http://www.tcmlink.com/pdf2/SIL99-2B.pdf. This specifies the various
> sealants and lubricants recommended for Continental engines.  If some other
> manufacturer, they will have an equivalent document. You can also call their
> support line and ask them.
>
> Continental 800-326-0089
> Lycoming 800-259-3279
>
> Good luck,
>
> Jay Phillips
>
>
> -----Original Message-----
> From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Ames
> Angier M.
> Sent: Monday, September 15, 2014 10:30 AM
> To: Lancair Mailing List
> Subject: [LML] Lightspeed Ignition
>
> I've got some oil leaking around the mag hole cover plates.
> Permatex Aviation form-a-gasket was used originally as the sealant.
> Anybody got a better solution?
>
> Thanks,
>
> Angier Ames
> N4ZQ
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