On Sat, 12 Jun 2021 13:53:49 +0100, Andrew
wrote:

snip

Years ago, in the days when people drove Ford Cortinas Mk 1,
notchback anglia etc, the usual winter faff of poor starting
was 'fixed' by spraying some sort of waxy-plasticky substance
all over the plug leads and distributor cap. THis created a
reasonable water barrier. Can't remmber its name though.

Damp-Start.

Something like this might be useful for exposed sections of
brake/gear cables.

I doubt it, likely to just gum everything up.

Cheers, T i m