I am rebuilding the front calipers for the first time and I have some castrol red grease to ease the piston and new rubbers sleeves in. I understand red grease is rubber friendly.
Do I use the same red grease on the slider pin. I note from my research that this should be silicone grease. Is red grease the same as silicone grease?
Also I bought a rebuilt kit with all the necessary parts, unfortunately I have torn the piston seal and wish to buy another one. I can only find the full kits for sale. Does anybody just sell a new piston seal on its own.
As I understand it red grease is based on organic based lanoline type products not petro chemical based products, which is why it is used as any petro chemical product will eventually rot rubber.
Red grease is definitely NOT the same as silicone grease.
True - red rubber grease is a vegetable based product designed not to rot the rubber boots and seals (as normal hydrocarbon based greases like lithium EP grease would) and to be compatible with brake fluid - you only need a thin smear to help the rubbers in.
You can actually buy special caliper pin grease if you look for it