If you need an LHM brake fluid equivalent, you should look for a mineral hydraulic fluid specifically formulated to meet the LHM or LHM+ requirements. Several products offer similar performance and can serve as replacements when they meet the vehicle manufacturer’s specifications.
LHM Brake Fluid Equivalent
The best equivalent is another mineral-based hydraulic fluid that meets the required LHM specification. Products meeting ISO 7308 and the applicable PSA B71 2710 requirements are important options to consider.
Here are three products worth looking for.
1. Comma LHM1L 1L Hydraulic Fluid
Comma LHM Plus 1L Hydraulic Fluid is a mineral-based hydraulic oil designed for specialized hydraulic systems in selected Citroën, Peugeot, Rolls-Royce, and Bentley vehicles. It is suitable for hydraulic braking, suspension leveling, and power steering systems that require LHM or LHM Plus fluid.
Its advanced formulation provides anti-wear protection, lubrication, and stable viscosity across a wide temperature range. It meets ISO 7308 and PSA B71 2710 specifications.
Key Features:
- Mineral-Based Formula: Specially formulated for automotive hydraulic systems requiring LHM or LHM Plus fluid.
- Anti-Wear Protection: Contains additives that help reduce wear and protect hydraulic components.
- Viscosity Stability: Includes a viscosity index improver to maintain consistent fluid performance across temperature variations.
- Wide Compatibility: Suitable for specified Citroën, Peugeot, Rolls-Royce, and Bentley hydraulic systems.
- Industry Specifications: Meets ISO 7308 and PSA B71 2710 requirements.
- Fluid Compatibility: Compatible with other LHM and LHM Plus fluids meeting PSA B71 2710.
- Convenient Packaging: Supplied in a 1-liter bottle for topping up and hydraulic system maintenance.
2. TotalEnergies LHM Plus
TotalEnergies LHM Plus is one of the closest alternatives to original LHM hydraulic fluid. It is specifically formulated for hydraulic systems in vehicles that require mineral-based hydraulic oil.
It is designed for applications in several older Citroën models, including the XM, Xantia, BX, CX, SM, and GS. It is also specified for certain hydraulic systems in other vehicles.
Features:
- Mineral-oil-based hydraulic formulation.
- Designed for specialized automotive hydraulic systems.
- Suitable for specified Citroën hydraulic applications.
- Meets PSA B71 2710 requirements.
- Provides hydraulic lubrication and component protection.
- Suitable for systems requiring compatible LHM fluid.
TotalEnergies LHM Plus is an excellent first choice when the vehicle manufacturer specifies LHM or LHM Plus. It is particularly suitable for owners who want a product developed specifically for these hydraulic systems.
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3. Castrol LHM Plus
Castrol LHM Plus is another suitable alternative for vehicles requiring mineral-based LHM hydraulic fluid. Its formulation is designed for powered hydraulic systems that operate components such as brakes, suspension leveling mechanisms, and power steering.
The product uses mineral base oils and additives to provide lubrication, oxidation resistance, and protection against corrosion.
Features:
- Mineral-based hydraulic fluid.
- Designed for Citroën hydraulic systems.
- Provides corrosion and oxidation protection.
- Offers good lubrication properties.
- Maintains viscosity across a broad operating temperature range.
- Compatible with earlier LHM fluids.
Castrol LHM Plus is worth considering when maintaining a vehicle with an LHM-compatible hydraulic system. However, always verify the product specification and vehicle requirements before purchasing.
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4. Febi Bilstein 06161 Hydraulic Fluid
Febi Bilstein 06161 is a specialist hydraulic fluid designed for central hydraulic systems, power steering, and level-control applications.
It is formulated for vehicles requiring specialized hydraulic oils rather than ordinary brake fluid. Its properties include lubrication, corrosion protection, and resistance to aging.
Features:
- Green-colored specialist hydraulic fluid.
- Designed for central hydraulic applications.
- Provides corrosion protection.
- Offers good lubricating properties.
- Helps prevent deposits and foam formation.
- Suitable for specified power steering and level-control systems.
Febi Bilstein is another product to investigate when looking for an LHM-compatible replacement. However, do not assume that every Febi hydraulic fluid is interchangeable with LHM. Confirm the exact product specification against your vehicle’s requirements before using it.
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What Is LHM Brake Fluid?
LHM stands for Liquide Hydraulique Minérale, a French term meaning mineral hydraulic fluid. It is a green-colored hydraulic oil originally developed for specialized hydraulic systems in vehicles such as Citroën models.
Unlike conventional brake fluids, which generally use glycol-based or silicone-based formulations, LHM uses refined mineral oil with additives designed to provide lubrication, corrosion protection, and stable hydraulic performance.
Depending on the vehicle, LHM can operate several systems, including:
- Hydraulic braking systems.
- Hydropneumatic suspension systems.
- Power steering systems.
- Hydraulic clutch systems.
- Ride-height control systems.
LHM is commonly associated with older Citroën vehicles, but certain Rolls-Royce, Bentley, Jaguar, and agricultural applications also specify mineral-based hydraulic fluids.
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Other LHM Fluid Equivalents
Apart from the three products above, several manufacturers produce mineral hydraulic fluids designed for LHM applications.
Some alternatives include:
- Penrite LHM Plus: A mineral-based hydraulic fluid designed for systems requiring LHM, including specified braking, suspension, and power steering applications.
- Comma LHM Plus: A mineral hydraulic fluid meeting ISO 7308 and PSA B71 2710 requirements.
- Motorex LHM Plus: A mineral-based product developed for central hydraulic systems in Peugeot and Citroën vehicles.
When comparing alternatives, prioritize the manufacturer’s stated specifications rather than relying only on the product name or color.
Can You Use DOT 3 or DOT 4 Instead of LHM?
No. DOT 3 and DOT 4 are not suitable replacements for LHM fluid.
Although both products are commonly used in automotive braking systems, they have different chemical compositions. DOT 3 and DOT 4 are glycol-based fluids, whereas LHM is mineral-oil-based.
These fluids are not interchangeable and should never be mixed.
Using DOT 3 or DOT 4 in an LHM hydraulic system can damage seals and other internal components. Similarly, using LHM in a conventional DOT brake system can cause serious compatibility problems.
DOT 5 silicone brake fluid is also not an acceptable substitute.
If the wrong fluid has accidentally been added, avoid operating the vehicle until the hydraulic system has been assessed by a qualified technician.
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Can You Mix Different LHM Fluids?
Generally, compatible LHM and LHM Plus products can be mixed when their specifications permit it. However, it is better to use the same approved product whenever possible.
Before mixing different brands, check that both products meet the required specifications and are explicitly compatible.
If the existing fluid is contaminated, degraded, or unknown, a complete fluid replacement using the manufacturer’s recommended procedure may be necessary.
How to Choose the Right LHM Equivalent
Before buying an alternative, consider these factors:
1. Check the vehicle manual
Start with the owner’s manual or workshop documentation. Confirm whether the vehicle requires LHM, LHM Plus, or another specialized mineral hydraulic fluid.
2. Check the specifications
Look for products that explicitly state compliance with ISO 7308 or the applicable PSA B71 2710 specification.
3. Confirm system compatibility
Some vehicles use different hydraulic fluids even when their systems appear similar. Check compatibility with the braking, suspension, steering, or other hydraulic components involved.
4. Avoid ordinary brake fluids
Never substitute DOT 3, DOT 4, DOT 5, or DOT 5.1 simply because they are marketed as brake fluids.
5. Buy from a reliable supplier
Choose sealed containers from reputable automotive parts suppliers. Contamination can affect hydraulic system performance.
Final Thoughts
The best LHM brake fluid equivalent is a mineral-based hydraulic fluid that meets the specifications required by your vehicle. TotalEnergies LHM Plus and Castrol LHM Plus are two strong options to consider, while Febi Bilstein 06161 is another specialist hydraulic product worth investigating after confirming its compatibility.
Other alternatives include Penrite, Comma, and Motorex LHM Plus.
Most importantly, never confuse LHM with conventional DOT brake fluid. Their chemical compositions are different, and using the wrong fluid can cause expensive damage to the hydraulic system. Always follow the vehicle manufacturer’s specifications before purchasing or adding a replacement fluid.
