John Smith wrote:

...
No one knows about silicone oils? Break down is a few hundreds of
degrees, good thermal conductivity, ... benign to all components,
including any gaskets, I can possibly think of, etc. Also, if you are
into health/toxic concerns, purchase a food grade ...

Regards,
JS

Actually, I don't know why anyone would use or suggest the use of
anything but silicone.

You can tear the case off your TV/radio, sit the chassis down in an
aquarium full of the stuff, turn it on and watch it! Pull it out,
remove the silicone, put it back in its' case and expect it to go to
live expectancy, or beyond ...

Try that with anything else ...

Regards,
JS