Yeah, that was one of the things I was wondering about as well--- what kind of temp controls do these parts warehouses have?

Down here in Houston area, stuff rusts in minutes if left outside. I have a $1500 stack of Coleman Racing rotors that are junk because I left them at the base of the garage door (inside the garage) overnight after unloading the truck. Went out the next morning to find a place to stick them in the garage, and they were already covered in surface rust. DOH.

I'm not sure what's in the caliper grease stuff, but it's supposed to be good for the seals and whatnot. I wonder if it's a silicone base instead of a petroleum base..
http://forums.rennlist.com/rennforum...al-grease.html

Based on that, then yeah it's just silicone grease. We use Dow 111 silicone grease all the time at work for o-ring lube on all of our subsea equipment.

You can buy it for about $13 a tube at McMaster..
http://www.mcmaster.com/#silicone-grease/=czrsi9
not exactly cheap, but one tube will last eons and you can use it for just about anything on the car with rubber in it.