Electrolytic grease on AC light bulbs?

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Vibration will affect bulb life, but not the tendency of the bulb's threads to get locked in place. And, the same thing happens with base-up installation in things that do NOT vibrate, like certain light fixtures.
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Doug Kanter wrote:

Maybe because heat rises. Curious.
--
Joseph Meehan

Dia duit
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Joseph Meehan posted for all of us... I don't top post - see either inline or at bottom.

CHEAP sockets. CHEAP bulb bases
Sockets and bulbs used to be brass now they are alumimum foillike...
--

Tekkie

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Plastic bases or other plastic in fixture can outgas due to high heat casuing a film on the bulbs as one cause.

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