Mineral hydraulic oil, compatible with all hydraulic mineral oil bicycle brake systems, Aero Technologie Professional Hydraulic Oil is designed for professional applications and is therefore extremely stable, the brake system does not require regular bleeding, Professional Hydraulic Oil does not absorb water and therefore has excellent aging resistance, ideal viscosity at both low and high temperatures in the range of: -58.7° C ~ 380° C, secure sealing due to optimal seal compatibility Item type Article Main color black Secondary color green