Sylvie Willis
It is not recommended to use a fuel line for brake fluid. Brake fluid is a much more aggressive solvent than most oil-based hydraulic fluids, and a regular hydraulic hose will be eaten away. Vintage bike restorers have used air compressor hoses for brake fluid reservoirs, but some have also reported that rubber fuel lines allowed brake fluid to seep through. It is best to use a hose that is specifically designed for brake fluid.
Can fuel line be used for brake fluid?
| Characteristics | Values |
|---|---|
| Fuel line hose | Incompatible |
| Transmission oil line | Incompatible |
| Air compressor hose | Compatible |
| Rubber fuel line | Incompatible |
| Teflon-lined SS braid hose | Compatible |
| Nylon air brake line | Compatible |
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What You'll Learn
Rubber fuel line incompatibility with brake fluid
It is not advisable to use a rubber fuel line for brake fluid. This is because the rubber fuel line is incompatible with brake fluid, and the fluid will seep through the line. Rubber fuel lines are made with nitrile or buna-N rubber, which is incompatible with brake fluid. As a result, the brake fluid will soften and sweat through the rubber fuel line. This could lead to a dangerous situation where the brakes could fail.
There have been several reports of individuals attempting to use a rubber fuel line for their brake fluid and experiencing issues. In one instance, the fluid seeped through the line on the very first night, resembling a soaker hose used in a flower bed. This is a clear indication of the incompatibility between the rubber fuel line and brake fluid.
Another individual reported a similar experience, stating that the brake fluid seeped through the rubber fuel line, resulting in a messy and potentially hazardous situation. This highlights the importance of using the correct type of hose for brake fluid to prevent any safety risks.
It is worth noting that some vintage bike restorers have reportedly used air compressor hoses for their brake reservoir lines without any issues. However, this is not a common practice, and it is generally recommended to use a hose specifically designed for brake fluid to ensure safety and prevent any leaks or damage to the braking system.
It is always best to consult with a professional or refer to the vehicle manufacturer's recommendations when it comes to maintaining and repairing essential systems like brakes to ensure the safety and integrity of the vehicle.
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Plastic or vinyl as a possible alternative
While fuel lines are made to withstand hydrocarbon fuels, they are not suitable for brake fluids. This is because brake fluids are glycol-based and have different chemical properties.
Some plastic or vinyl hoses are not totally resistant to brake fluid. Polyethylene tubing, for instance, allows brake fluid to slowly permeate the walls of the tubing. Similarly, vinyl tubing is not recommended as it is only suitable for water and not brake fluid.
However, there are some plastic alternatives that can be used. Teflon (PTFE) tubing, for example, is suitable for both fuel and brake fluids. Another option is to use an EPDM (ethylene-propylene diene monomer) rubber hose, which is commonly used for brake fluid reservoir applications.
It is important to note that the type of hose needed for brake fluid applications may depend on the specific use case and the pressure involved. For instance, some hoses may be suitable for race bikes that are frequently inspected but not for street bikes that require more trouble-free solutions.
When in doubt, it is always best to consult a professional or the manufacturer of the brake fluid to determine the most suitable hose material.
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EPDM hose as a potential solution
Using a fuel line as a brake fluid line is not recommended. Several forum users have reported that they have tried using a rubber fuel line for brake fluid, but the fluid seeped through the line.
EPDM hoses, on the other hand, are a potential solution. EPDM stands for Ethylene Propylene Diene Monomer, a synthetic rubber blend that is known for its excellent resistance to heat, ozone, and chemicals. It is commonly used in automotive applications, including brake systems.
EPDM hoses are compatible with brake fluid and have been used successfully in high-end car restoration projects. They are available in various sizes and lengths, including 1/4", 1/2", and 3/4" diameters and lengths of 12", 48", and 50 ft. They can be purchased from automotive suppliers and online retailers, with some offering free shipping on orders over a certain amount.
When considering an EPDM hose as a solution, it is important to ensure that the hose is specifically designed for brake fluid applications and that it meets the temperature and pressure requirements of the specific vehicle. It is also recommended to consult a professional or refer to manufacturer guidelines to ensure the correct hose is selected for the specific application.
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Air compressor hose as a viable option
Using a fuel line as a brake fluid line is not recommended. The incorrect hose is known to "sweat" the stuff right out. Instead, an air compressor hose is a viable option for a brake fluid line.
Air compressor hoses are designed to be durable and long-lasting, ensuring optimal performance and safety for the vehicle's braking system. They are made of synthetic rubber and reinforced with layers of braided or spiral-wound fibers to withstand high pressures and temperatures. Vintage bike restorers often use air compressor hoses for the brake reservoir line, and they can be sourced for free from local tire shops.
Air brake systems are commonly used in large, heavy vehicles such as trucks, buses, and trailers. They use compressed air to actuate the brakes, while hydraulic brake systems use hydraulic fluid. Air brake hoses are thicker and more durable than hydraulic brake hoses as they must withstand higher pressures and temperatures.
When choosing an air compressor hose for brake fluid, it is important to consider the hose's compatibility with the brake system, size, working pressure, burst pressure, and length. Proper installation, maintenance, and safety measures are crucial for optimal performance and longevity.
While an air compressor hose can be a viable option for a brake fluid line, it is always recommended to consult with a professional mechanic or refer to the vehicle manufacturer's specifications to ensure the correct hose is used.
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Teflon-lined SS braid hoses
While fuel line hoses are incompatible with brake fluid, Teflon-lined SS braid hoses are a great option for brake fluid transfer.
One of the key advantages of Teflon-lined SS braid hoses is their compatibility with brake fluids. Unlike fuel lines, these hoses are designed to prevent seepage and sweating, ensuring that brake fluid remains contained within the hose. This is crucial for the safe operation of brake systems, as leakage can lead to reduced braking performance or even failure.
Additionally, Teflon-lined SS braid hoses offer a wide temperature range, making them suitable for use in various environments. They can operate continuously from -65°F to 400°F (-54°C to 204°C) and can withstand intermittent temperatures as low as -100°F and as high as 500°F (-73°C to 260°C). This makes them suitable for extreme conditions and ensures that the hose can handle the heat generated during braking without failing.
The non-conductive nature of Teflon-lined SS braid hoses is another advantage, particularly in applications where electrical conductivity could be a safety concern. Overall, these hoses offer a safe, durable, and flexible solution for brake fluid transfer, ensuring reliable braking performance.
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Frequently asked questions
No, a fuel line cannot be used for brake fluid. It is well known that the incorrect hose will "sweat" the stuff out.
Brake fluid will seep through a fuel hose over time, causing the rubber to deteriorate from the inside.
Neoprene Type A is ideal for brake fluid.
Brake systems have much higher pressure (1000-2000psi) compared to fuel systems (30-60psi).
Yes, if you get a brake line with a large enough diameter (5/16 or 3/8), it can be used as a high-pressure fuel line.
