Hydraulic fluid – when and how is it changed and topped up?

Contents

• When is it necessary to change hydraulic fluid?
• Difference between red and green hydraulic fluid
• How and where to add hydraulic fluid?

Hydraulic fluid plays a key role in a vehicle's system. Without it, handling the vehicle would be difficult and inefficient. Let's take a detailed look at when, where and how it is changed to keep the car in optimal condition.

When is it necessary to change hydraulic fluid?

Typically, it should be changed every 40,000 to 60,000 kilometers, depending on the manufacturer's recommendations. Here are when it's needed:

• symptoms of worn-out fluid – the most common symptoms include difficulty turning, unusual noises and leaks;

• checking the color and smell – it should be clear and without a burnt smell. Dark and contaminated fluid is a sign it needs replacing;

• condition of seals – worn or damaged seals can lead to leaks and loss of hydraulic fluid.

Replacing it not only improves vehicle handling but also extends the life of the hydraulic system.

Difference between red and green hydraulic fluid

Choosing the right type is important for the optimal condition of the hydraulic system. Red is typically used in American and Japanese cars with automatic transmission, while green is preferred in European models with a manual gearbox.

The difference between them is not only in color but also in chemical composition, which can affect the hydraulics' performance.

Using the wrong type of fluid can damage the system. Check your vehicle's manual or consult a professional.

How and where to add hydraulic fluid?

Adding it may seem complicated, but with the right instructions it's entirely possible to do it yourself. First, find the hydraulic fluid reservoir, which is usually located in the engine compartment of the vehicle. Here's how to add it:

1. Parking

   Before you start, make sure the car is parked on a level surface and the engine is off.

2. Topping up

   Open the reservoir cap and add the required amount of fluid. Top up slowly to avoid air bubbles.

3. Checking the level

   Check the level periodically to ensure you do not overfill the reservoir. The check is done using a special dipstick or the reservoir window.

4. Testing

   After you finish, close the cap tightly and start the engine to make sure it circulates as it should.

Proper topping up of hydraulic fluid is important for the smooth operation of the system.

To be sure everything is carried out properly, it's best to trust a professional car service for hydraulic fluid replacement. If a replacement is necessary or any of the above signs appear, do not hesitate to consult our experienced mechanics at OnDrive for the best results.