RC Servo Motors, Brushless? Work in oil?

Can any of the RC servo motors work oil filled like brushless DC motors? Some them call themselves "Coreless".
Thanks, Jon
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if the circuitry is protected from floating metal parts, and the oil doesn't remove the varnish from the coil wires, should work fine, if slower.
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Do RC servos have contacts or are they brushless?? This seems to determine it electic motors can handle operatin emersed in oil.
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most use dc motors that are geared afaik, that's with contacts.
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At our last club meeting, one of the members brought a robot submarine. He fills his motors with baby oil, and claims they run great, with only about a 10% RPM reduction. He did warn against using silicon-based oils however, that it would insulate the brushes.
Jeff.
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