On a previous car (Saturn S-series sedan) I had problems with the parking brake cables sticking in winter.
I ended up forcing WD-40 through the cables once per year, before winter. It worked for at least 5 years or so...
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On my current Fiero, the select (or was it shift) cable started sticking. I do not blame the cables, I would instead suspect my custom exhaust pipes submitting the then new Rodney Dickman cables to too much heat.
I dripped motor oil into the end of the offending cable, and the problem has been solved for the last two driving seasons

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My experience is that oil does not spell instant death for cables.
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I think that cables are often PTFE (Teflon) lined, so oil should not attack them. However, I am not sure if the lining is always PTFE.
If oil is not used in production, I would suspect that it is considered not usually necessary, and the oil wouldn't last long enough for a production car.
I actually have work colleagues (in a different division) who focus on cables, but I am not chummy enough with them to ask these questions for no reason.
[This message has been edited by pmbrunelle (edited 12-21-2021).]