When installing brake pads, the brake lubricant used should be

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Brake lubrication must endure braking temperatures without spreading onto the friction surfaces. Silicone-based, high-temperature brake grease fits this requirement because it stays stable under heat and doesn’t melt or run, forming a thin protective film on pad backs, shims, and caliper contact points to prevent squeal and sticking. Water-based lubricants wash away and aren’t heat-stable, making them unsuitable for brake assemblies. Oil-based and solvent-heavy lubricants can contaminate the friction material and rotor, reducing braking effectiveness. Graphite-containing products aren’t ideal for pad contact surfaces because they can transfer to the rotor and alter friction. So, use a thin layer of silicone-based, high-temperature brake grease on non-friction contact areas only.