Purpose and Specifications

LIQUI MOLY 3667 Hydraulic Oil is a premium synthetic fluid designed for central hydraulic systems in vehicles like Peugeot, Citroen (PSA), and Renault. It powers power steering, level control, suspension, and convertible tops with smooth operation.

This 1-liter carton delivers key benefits: flows perfectly at temperatures down to -45°C for reliable cold starts, stays stable under high heat to prevent breakdown, offers maximum wear protection for pumps and valves, fights corrosion, and resists aging for longer fluid life. Meets exact specs including LDS, PSA S71 2710, Renault PSF Class 1.

• Keeps steering light and responsive in freezing winters
• Handles hot engine bays without thinning out
• Reduces leaks and repairs by protecting seals and components
• Low foam for quiet, efficient hydraulic action

When to Use / Replace?

Use LIQUI MOLY 3667 in vehicles requiring LDS fluid or matching specs. Ideal for hydraulic clutches on BMW R1200 GS and similar, plus Citroen/Peugeot systems. Replace every 40,000-60,000 km or 2-3 years, or sooner if fluid darkens, smells burnt, or steering feels stiff. Shelf life is 5 years unopened. Always check your owner's manual and use undiluted for best results.

FAQ

Q: Can I mix this with regular ATF?
A: Best used alone for peak performance, but safe for topping off ATF systems per manufacturer guidelines.

Q: Will it work in cold climates?
A: Yes, fully functional down to -45°C, ensuring power steering and hydraulics work flawlessly in winter.

Q: How much for a full flush?
A: Typically 1 liter fills most systems; check your vehicle's capacity and flush completely for optimal protection.