How to rustproof brake lines

This blog post will answer the question, “How to rustproof brake lines” and explain topics like different ways to make brake lines rustproof, what causes brake lines to rust, a few best brake line materials, and frequently asked questions.

How to rustproof brake lines?

Brake lines can be made rustproof by wrapping them with something like POR15 while replacing them. This substance adheres to, covers, and transforms metal, becoming rust-proof.

Few of the best ways to make brake lines rustproof:

Get a sprayer for olive oil or something similar, and every three to six months, spray things down with diesel fuel. This will preserve the metal and begin to loosen rusty nuts and other debris.

Copper-Mickel Brake Lines should be used:

  • Replace the brake lines with Copper-Nickel Brake System, which will not deteriorate and is significantly less expensive and quicker to twist and flair than Stainless Steel Brake System. 

Stainless steel brake lines should be used. 

  • This is a fantastic choice, however, stainless steel lines (not coiled lines) are far more difficult to work with than normal steel. 
  • It is more likely to split. As a result, the ends must be treated very differently. However, SS will considerably decrease the amount of rust noticed on the brake system.
  • Wrap the brake lines with something like POR15 while replacing them. 
  • This substance adheres to, covers, and transforms metal, rendering it rust-resistant.

However, there are two cautions to this information. 

  • For starters, you won’t be able to get that on the fittings. It will not fall apart if you do this and then compress it into the caliper or whatever. It will glue the 2 parts together much more effectively than corrosion would.
  • Second, it can’t be left out in the sunlight for long periods of time. If it is, it will deteriorate and permit rust to occur. Although this isn’t an issue beneath the automobile, I thought I’d bring it up.

How to Repair Rusted Brake Lines? Step-by-Step Guidelines:

One of the most crucial components of your automobile is the braking system. You, your families, and others are at risk if your vehicle’s brakes aren’t up to par. As a result, it’s critical to keep your brakes in good working order. The importance of keeping your vehicle’s brake lines in good working order cannot be overstated.

Although your vehicle’s braking system is complex, it is simple to repair. Damaged brake lines could be the reason for your brakes needing to be pushed harder or not working properly. This article will show you how to repair rusty brake lines and ensure your security.

Steps to repair rusted brake line are given below:

  • Making Preparations
  • Examine the Rust
  • Brake Line Removal
  • Brake Line Preparation
  • Make a Bake Line
  • Brake Line Bleeding

I will now elaborate on the guidance given above.

Making Preparations:

It is not always the case that a sagging brake line indicates that your vehicle’s brake lines are rusted. Before making any moves, make sure the sinking pedals are not caused by anything else. When the vehicle is stopped, a simple test can be performed. Keep a uniform pressure on the brake pedal of your vehicle. If the pedal lowers even slightly, your brake system might have to be bled.

A failed cylinder, a faulty caliper, a leaky back wheel, or defective ABS can all contribute to a sagging braking system. Vehicles with gearboxes should be in first gear while those with automatic transmissions should be in the park before wiping their brake cables.

Then, gather the supplies you’ll need for the job, including a car jack, jacks, tools, cleaned brake pads, and a service guide. Also, review your owner’s manual to find out what sort of brake fluid your car requires and how to remove brake dust.

Tools Needed
Jack stand
Cleaning pads
Service Guide or Manual

Examine the Rust:

Here’s how you can do it:

  • Raise your automobile with a jack and place it on a car lift or use jacks to hold it up. 
  • Locate the brake line then check it for debris or corrosion.
  • The brake line is usually completely or partially corroded. If the brake line is partly rusted, wiping it restores the system to its original state.
  • However, if they continue to malfunction after wiping, they should be changed entirely. You may need the top flare instruments to make work easy during this procedure. 
  • A flared tool from your local tool store is one of the greatest brake line cleaning equipment.
Tools Needed
Vehicle lift
Jack stand
Flared tool

Brake Line Removal:

Steps of removing brake line:

  • To begin, identify the brake line that has to be cleaned. Disconnect the brake line by unscrewing the studs with tools.
  • Loosen the studs that attach the brake line to the chassis to detach it as well. 
  • Before cleaning the dust out of the brake lines, use a measuring tape to take the proper measurement of the brake line.
Tools Needed
Measuring Tape

Brake Line Preparation:

Purchase a replacement brake line based on the exact specifications and size. Place the new and existing brake lines next to one another. This task would necessitate the use of the best brake line bender. 

These gadgets will assist you in matching the new brake line to the previous one. A bender creates connections while still allowing liquid or gas to flow freely through the tube. Brake line benders also aid in the creation of ideal curves.

Make a Brake Line:

Tighten the connecting screws and fill the cylinder with hydraulic fluid after installing the new brake line using clips from the previous one. Brake fluids carry stress from the pedal to the brake discs. The ideal liquid for your car should effectively transfer pressure, grease the calipers, have a high temperature, and be corrosion resistant. 

DOT brake fluid is the most widely used braking fluid nowadays. Finding the proper fluid for your car is critical because it is one of the most essential factors affecting the effectiveness of your car’s braking system. The finest brake fluid also protects the longevity and effectiveness of your vehicle’s components. 

There are three different types of braking fluids available: 




Brake Line Bleeding:

Bake fluid frequently draws humidity, causing braking system corrosion. Bleeding the brake line removes any moisture that is preventing the brake line from operating correctly. After filling the master cylinder with fluid, get someone to run the vehicle and use the brakes.

Permit air to escape entirely till the brake fluid begins to flow by loosening the bleeder nut on one of the tires. Rep this procedure for all four wheels before refilling the cylinder with brake fluid. After around 20000 miles, the brake fluid must be examined and replaced. 

Bleeding the system increases its efficiency, and that should be done per 2 – 3 years during the life of your car. Before driving the automobile again after releasing the brake fluid, be sure the brakes are working properly.

Unfortunately, there really is no foolproof technique to prevent brake lines from rusting, although lubricating and softening, as well as routine maintenance, can help tremendously. It may be important to update some of the components in your braking system occasionally. Updates extend the life and effectiveness of your vehicle’s braking system.

Few Highly recommended brake line materials:

The two best brake line materials are given below:

  • 25ft of 3/16” Copper Nickel Brake Line With Fittings
  • 25ft Coil of 3/16” Copper Nickel Brake Line Tubing

I will now elaborate on the guidance given above.

25ft of 3/16” Copper Nickel Brake Line With Fittings:

If you’re searching for a brake line that’s both long-lasting and simple to attach, this cable’s copper-nickel combination is a perfect choice. 

It is less likely to tarnish or erode than steel, and it is also quicker to twist and flare.


  • The copper-nickel alloy’s only drawback is that this is not as robust to ruptures as metal. 
  • This won’t be a factor if you primarily travel in the town, but it won’t be as good for off-roading cars. 
  • This long-lasting brake line is, however, resistant to punctures. It’s possible that you’ll never ever have to repair it again.

Here’s a link to Amazon.

25ft of 3/16” Copper Nickel Brake Line With Fittings

Benefits that have been noted

  • Oxidation and corrosion resistance
  • There’s enough wire and connectors for a full automobile with this kit.
  • There are 19 fittings included.
  • Bending and flaring the tube is simple.
  • For usage in road vehicles, the DOT has given their approval.

25ft Coil of 3/16” Copper Nickel Brake Line Tubing:

This tube is best suited for vehicles that efficiency means in cities and suburbs settings. The copper’s suppleness can become a hindrance on rough roads. This tubing, on the other hand, would last as long as the vehicle you put it on in the appropriate circumstances.

Here’s a link to Amazon.

25ft Coil of 3/16” Copper Nickel Brake Line Tubing

Benefits that have been noted

  • For placement, it’s simple to twist and curve.
  • There’s enough tube for a complete automobile with this kit.
  • Hand-bending is possible because of the solid copper construction.
  • Even in the harshest situations, it won’t damage.
  • Even total pressure requires a constant tube wall thickness.

Frequently Asked Questions:(FAQs) how to rustproof brake lines

What do you coat brake lines with?

Only three materials are suitable for brake lines.

  • Steel (typically with a tin coating to avoid corrosion)
  • Stainless steel (usually plated)
  • Nickel-copper alloy (which will not deteriorate and is significantly less expensive and quicker to twist and flair than Stainless Steel Brake System)

Are rusty brake lines bad?

Yes, if there is a lot of rust on the brake system, they would not be able to function properly. Your vehicle’s stopping skills will deteriorate to the point that driving it on the roads will be risky. Yes, brake line issues are not something you should overlook.

When should you flush brake lines?

A brake fluid cleanout effectively eliminates all of your system’s existing dirt, unclean brake fluid and refills it with new, clean fluid. A brake fluid cleanout should be included in your regular vehicle maintenance schedule every 25,000 miles or every 2 years, whatever happens, sooner.

Can you use Teflon tape on a brake line?

Teflon tape cannot be used securely on brake lines, and it should not be attempted. Anything must not be relied on to prevent leakage in a brake system. For proper functioning, the system depends on pumping a liquid at increased speed in a closed environment, and Teflon tape will jeopardize that stability.

How long does it take to replace brake pipes?

When it comes to replacing brake lines, how long would it take? In most cases, a skilled technician can repair all 4 brake lines in 2 to 3 hours fewer. Depending on your level of competence, changing the brake lines alone may take somewhere between four to seven hours.

What is the difference between a brake line and a brake hose?

The tiny brake line located at every tire is made from rubber, unlike the brake system, which are copper coils that run through the middle of the vehicle. The hose’s duty is to transport brake fluid from a brake system attached to the vehicle’s structure to the car’s brake caliper.


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