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Automotive

Orthene automotive brake fluids are engineered for stable, reliable braking across daily drivers, commercial vehicles and high-performance sports cars.

Automotive

Every Orthene automotive fluid is developed to perform across petrol, diesel, hybrid and EV platforms, maintaining viscosity, pedal feel and reliability over long-term use. Each batch is blended and tested to strict standards, delivering dependable and consistent braking behaviour in all conditions.

Orthene products for Automotive

Built on expertise and driven by quality, we produce brake fluids that outperform national and international standards.

DOT 3

DOT 3 is a glycol-based brake fluid traditionally used in older vehicles and certain international markets. It delivers reliable braking…

DOT 4

DOT 4 is the most commonly specified brake fluid for modern vehicles, offering higher boiling points and a greater safety…

DOT 4 Borate Free

DOT 4 Borate Free is formulated without borate esters, for applications and markets where a lower hazard DOT 4 brake…

DOT 4 +

DOT 4 + builds on conventional DOT 4 performance with elevated boiling points and improved resistance to thermal degradation. Designed…

Super DOT 4

Super DOT 4 is a heavy duty brake fluid formulated specifically for demanding operating conditions and heavy duty vehicles such…

DOT 4 LV

DOT 4 LV (Low Viscosity) is engineered to support fast ABS and ESP cycling, especially in low-temperature environments. Its lower…

REC 60

REC 60 is a high-performance brake fluid which meets the DOT 4 LV standard but is formulated with 60% recycled…

DOT 5.1

DOT 5.1 builds on DOT 4 technology, offering higher boiling points and improved low-temperature viscosity. Ideal for performance-focused vehicles and…

DOT 5.1 LV

DOT 5.1 LV combines the thermal advantages of DOT 5.1 with the low-temperature viscosity profile of DOT 4 LV. It…

DOT 4 Racing

DOT 4 Racing is formulated for sustained high-temperature operation typical of track and performance driving. It delivers elevated dry boiling…

RR363

RR363 is formulated specifically for pre-1980 Rolls-Royce and Bentley models using a metal brake-fluid reservoir. It blends a synthetic glycol…

Bespoke

Orthene develops bespoke brake-fluid formulations tailored to unique performance, regulatory or environmental requirements. We work with internationally recognised laboratories to…

DOT 5 Silicone

DOT 5 silicone fluid uses a non-glycol base that repels moisture and resists corrosion, maintaining a 260°C boiling point throughout…

FAQ's

Brake fluid is a high-performance, safety-critical hydraulic fluid that transfers force from the brake pedal to the braking system. It must be incompressible, have a high boiling point, remain fluid at very low temperatures, and be compatible with all braking system materials.

Yes. The main types are glycol-based fluids (DOT 3, DOT 4, DOT 5.1), silicone-based fluids (DOT 5), and mineral oil fluids. Most modern vehicles use glycol-based brake fluids.

Glycol-based brake fluids absorb moisture over time. This lowers the boiling point and increases corrosion risk, which can reduce braking performance and safety.

As moisture content increases, the boiling point drops. Under braking heat, the fluid can boil, creating vapour that is compressible, leading to brake fade or complete brake failure.

Always follow the vehicle manufacturer’s recommendation. If none is specified, changing brake fluid approximately every 18–24 months is considered best practice.

DOT 3, DOT 4, and DOT 5.1 are glycol-based fluids with increasing boiling points and performance. ESP (ISO Grade 6) fluids are low-viscosity fluids designed for modern ABS and stability systems.

It represents the boiling point of brake fluid after it has absorbed moisture in service. It is a key indicator of long-term braking safety.

No. DOT 5 is silicone-based and incompatible with conventional systems. DOT 5.1 is glycol-based and compatible with DOT 3 and DOT 4 systems.

No. Conventional brake fluids are synthetic hydraulic fluids and are not compatible with mineral oils.

DOT 3, DOT 4, and DOT 5.1 can generally be mixed, but performance will revert to the lowest grade. DOT 5 and mineral oils must never be mixed with glycol fluids.

Always use the brake fluid specified by the vehicle manufacturer to ensure correct performance and material compatibility.

Colour is not a reliable indicator of fluid condition or performance. Brake fluid should be changed based on time, moisture content, or manufacturer guidance.

Time is usually a bigger factor than mileage. Moisture absorption occurs even when a vehicle is not driven.

Moisture enters through hoses, seals, reservoirs, and microscopic porosity, even in sealed systems.

Boiling creates vapour bubbles that compress under pedal pressure, reducing or eliminating braking force.

Modern stability and ABS systems require low-viscosity brake fluids to allow rapid fluid movement for precise electronic control.

Unopened brake fluid has a long shelf life if stored correctly. Once opened, it should be used promptly to avoid moisture contamination.

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Tell us what you're looking for using the form below, or email enquiries@orthene.com and we’ll get back to you within 48 hours.

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Electric & Hybrid Vehicles

Brake fluids developed to support regenerative braking, higher vehicle mass and fast-acting electronic control systems.

Bicycles

Reliable, high-performance bicycle brake fluids designed for the casual rider or professional cyclist.

Motorcycles

Brake fluids engineered to support the rapid dynamics and complex systems of modern motorcycles.

Heavy Duty Trucks

Each fluid is developed to handle the braking demands of trucks and industrial vehicles in challenging conditions and punishing operating…

Military

Brake fluids meeting stringent standards for military platforms, tested for performance and durability.

Motorsport Racing

Brake fluids engineered for the extreme demands of racing, delivering consistent performance under high stress.

Utility & Service

Brake fluids engineered for vehicles operating in demanding utility environments, delivering durability, corrosion protection and consistent braking performance across varied…

Vintage

Specialist brake fluids designed for vintage and collector vehicles, providing long-term stability, component protection and dependable braking for vehicles driven…

Other sectors

ALL SECTORS

Electric & Hybrid Vehicles

Brake fluids developed to support regenerative braking, higher vehicle mass and fast-acting electronic control systems.

Bicycles

Reliable, high-performance bicycle brake fluids designed for the casual rider or professional cyclist.

Motorcycles

Brake fluids engineered to support the rapid dynamics and complex systems of modern motorcycles.

Heavy Duty Trucks

Each fluid is developed to handle the braking demands of trucks and industrial vehicles in challenging conditions and punishing operating…

Military

Brake fluids meeting stringent standards for military platforms, tested for performance and durability.

Motorsport Racing

Brake fluids engineered for the extreme demands of racing, delivering consistent performance under high stress.

Utility & Service

Brake fluids engineered for vehicles operating in demanding utility environments, delivering durability, corrosion protection and consistent braking performance across varied…

Vintage

Specialist brake fluids designed for vintage and collector vehicles, providing long-term stability, component protection and dependable braking for vehicles driven…