Mineral oil brake fluid sits in a closed system where contamination means compromised braking performance. Campagnolo formulates this red mineral oil specifically for their hydraulic disc brake systems, which means the viscosity, additives, and thermal properties match what those calipers and levers need. Using fluid from Shimano, Magura, or generic bottles voids your warranty and risks seal damage since Campagnolo only tested compatibility with their own formulation.

The low viscosity formulation moves easily through brake lines and allows quick lever response without that mushy feeling you get from thicker fluids. Campagnolo's mineral oil does not absorb water the way DOT fluid does, which eliminates the need for regular preventive bleeding just to maintain boiling point. You bleed when you need to remove air or when you shorten hoses, not on a calendar schedule. The fluid also will not irritate your skin during bleeds and will not damage frame finishes if you spill some while working.

This fluid works with all Campagnolo hydraulic disc brake systems: the 11-speed groups, the 12-speed mechanical and EPS groups, and the 13-speed EKAR group. From February 2021 forward, Campagnolo ships all their hydraulic systems with this red oil. If you have an older system that came with blue oil, you can switch to red or mix them since they are compatible, though keeping one type makes it easier to spot air bubbles during bleeds. You need Campagnolo's DB-100 bleed kit to service these brakes since the fittings match their specific lever and caliper ports.