Brake Bleeding Tools & Hydraulic Diagnostics

What lubricant must be used on rubber boots and sliding caliper guide pins during a brake service?

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 Correct IncorrectHigh-temperature 100% silicone or ceramic synthetic brake grease. Petroleum-based greases (chassis grease) swell and degrade EPDM rubber slide pin boots over time.

What lubricant must be used on rubber boots and sliding caliper guide pins during a brake service?

• WD-40 spray
• High-temperature 100% silicone or ceramic synthetic brake grease (safe on EPDM rubber)
• Standard petroleum axle chassis grease
• Motorcycle chain lube