"Lubricant" is a generic term for a number of chemicals whose function is to reduce friction between two surfaces, and additionally may reduce or dissipate heat or clean the surface(s) in question.
Silicone caliper grease works well.
a "lubricant" is a friction-reducing substance: a substance, typically oil or grease, applied to a surface to reduce friction between moving parts
I have a 2002 XG 350 it is near the rear wheel drivers side, , You will need to put a rust lubercant on it once or twice a few days a part then you need two wrences to remove it , . plus some gas will spill out after braking it lose wait till the gas stops, it wasnt a bad job at all,