Review on Permatex 80653 Silicone Extreme Lubricant by Kenneth Mills

May cost a little more than purple brake grease (which is not compatible with rubber parts such as caliper boots) but that's it it costs. It has the same temperature range and durability as the purple stuff, but you can use it anywhere instead of buying two lubes—one for the caliper pins and one for the back of the brake pads and mounting brackets. Its orange color is highly visible, making it easy to spot if you place it where it doesn't belong.