So ill park and my car sits outside for roughly 3 days or so at a time. Well when i go to leave and release the parking brake the rear calipers stay clamped. This requires me to drive with sticking calipers in the rear until they...i guess unfreeze...and let go. Possibly water in the rear brake lines? Not sure what would be causing this, could the calipers just need some lube?

 

water in your parking break cable? you can spray some pb blaster in the brake cable if there is access to dissolve some rust, wd40 would be good for displacing any water. there isnt anything to lube on the calipers other than the grease points.

 

doesn't hurt to do a fluid flush on all lines. grease all of your pistons etc. and spray down your cables with some penetrating lube. not wd40 as it doesnt lube.

 

flush all the lines....sound like water or sumin is in your break lines causing the breaks to "bind" up

 

well thats what i was thinking, cuz i am at least smart enough to know that the parking brake does not have fluid.....ooo and wut kind of headlight fluid flush should i do? recommend synthetic fluids?

 

Rear calipers are prone to sticking anyway, though it's usually not temperature related. If they haven't been replaced in a while, sounds to me like you just need to thrown new ones on (they are easy to replace and only cost about $100 each).