Got up the other day to find that a rear caliper was seized on the NA Miata. A few weeks back the front had gotten sticky as well...
as best I can tell, the problem (with both) was that the sliding caliper was not sliding on it's guide pins. After cleaning up the rear pins today, I applied dielectric grease to them... it is essentially a waterproof silicone grease, and if it can take the heat at a spark plug boot atop an engine, I figure it should be able to take the heat at a caliper pin as well. Supposedly Ford sells a tube of the stuff as dielectric/brake caliper grease.
So if you are ever in a pinch or don't want a container of brake grease that gets used once a year (if that), give the stuff a shot.
