Purpose and Specifications

BOSCH Hydraulic Oil 1 987 479 124 (BF051 LHM -1L) is a premium mineral-based fluid designed for Citroën and Peugeot hydraulic suspension, power steering, and brake systems. It delivers smooth ride height control and responsive steering in classic models like Citroën DS, ID, CX, BX, XM, 2CV, and Peugeot 405 X4.

This 1-liter bottle protects pumps from wear, resists corrosion, and maintains fluidity from -40°C to over 150°C, ensuring reliable performance in cold winters or hot summers. High anti-foam properties prevent spongy brakes, while excellent air release keeps the system efficient for up to 50,000 km or 2 years before replacement.

• Perfect for green-painted hydraulic components in Citroën vehicles post-1966
• Compatible with Rolls-Royce, Bentley, and select Fiat/Iveco systems
• Non-hygroscopic formula stays stable without absorbing moisture
• Shelf life: 5 years unopened

When to Use / Replace?

Use this oil during routine maintenance or if you notice sagging suspension, stiff steering, or brake fade. Replace every 2 years or 50,000 km to avoid pump damage and maintain Citroën's legendary ride quality. Always flush old synthetic fluids like DOT types first—never mix.

Ideal for daily drivers and restorers keeping classics roadworthy.

FAQ

Is BOSCH LHM safe for my Citroën DS? Yes, it's formulated for DS/ID models after September 1966 with green components, providing anti-wear protection for 5,000+ hours of pump life.

Can I use it in modern cars? No, stick to vehicles specifying LHM or PSA B71 2710—check your manual to avoid seal damage.

How do I know when to change it? Look for darkening fluid, poor suspension response, or every 2 years/50,000 km for peak performance.