Akfix A40 Magic Multi-Purpose Spray

Akfix A40 Magic in the 400 ml aerosol — a penetrant, lubricant and water displacer in one can. Frees rusted bolts and seized fittings, quiets hinges and locks, drives out moisture and dissolves tar, gum and adhesive residue, leaving a protective film behind. Silicone-free, which is the thing worth knowing here: unlike a silicone spray it will not contaminate a surface you intend to paint later.