30/04/2026
Next up in our greases series, we look at why copper grease has no place on a modern brake system.
Copper slip has been a workshop staple for decades. For older brake systems, it had its uses. But modern vehicles have moved on, and copper grease hasn’t kept up.
Why shouldn’t copper grease be used on brake systems?
➡️ Modern ABS, ESP and stability systems rely on precise, low-voltage, electrical signals. Copper is conductive, meaning it can interfere with these signals and trigger faults.
➡️ Most copper greases are petroleum-based, which causes EPDM rubber seals and caliper boots to swell, crack or soften — leading to sticking sliders and brake failure.
➡️ Copper accelerates galvanic corrosion when in contact with aluminium calipers, causing components to seize over time.
➡️ Today’s brake pads have built-in NVH-control layers. Adding copper slip to the mix can actually increase brake noise, not reduce it.
Copper slip earned its place in workshop history. But vehicle technology has moved on — and so should your lubricant choices.
