Parts for your 2018 Holden Commodore-Power steering fluid

Power Steering Fluid in the 2018 Holden Commodore

When it comes to the 2018 Holden Commodore, understanding the role of power steering fluid is key for anyone wanting to keep their ride smooth and reliable. The 2018 model, particularly the VF II and ZB series Commodores, features modern steering technology that influences whether power steering fluid is part of regular maintenance or not.

For the 2018 Holden Commodore, particularly with the ZB model that carries a more contemporary setup, traditional hydraulic power steering systems that rely on power steering fluid are not used. Instead, many versions of the 2018 Commodore are fitted with electric power steering (EPS). This means that rather than using a hydraulic system powered by an engine-driven pump and fluid, the steering assistance is delivered electrically through a motor directly connected to the steering mechanism.

So why is power steering fluid not relevant for the 2018 Holden Commodore? The switch to electric power steering offers several advantages. EPS is more efficient, saves fuel, and improves overall vehicle dynamics. Without the need for a hydraulic pump or fluid reservoir, the system requires less maintenance and reduces the chance of leaks or fluid contamination that can occur in hydraulic setups. Electric power steering also allows for more precise steering control and can easily integrate with advanced driver assistance systems which are becoming more common in this model.

Because of this, there is no power steering fluid to check, top up or replace on the 2018 Holden Commodore. The absence of hydraulic fluid simplifies routine servicing, as there is no need to worry about fluid degradation, contamination, or leaks. Instead, maintenance focuses on electrical components such as sensors, wiring, and the electric motor that provide the steering assistance.

However, if your Commodore is an older variant or a specific trim that retained a hydraulic system - which is less common for the 2018 model year - then power steering fluid would still play an essential role. For those rare cases, power steering fluid acts as the lifeblood of the hydraulic steering mechanism, helping to transmit force from the steering wheel to the wheels, reducing driver effort and improving handling comfort.

For cars equipped with hydraulic power steering, the fluid lubricates the pump and valves and also helps in dissipating heat generated during steering operation. Over time, this fluid can degrade, leading to reduced steering performance or potential component damage. Regular checks of the fluid level and condition are important to ensure the system operates smoothly and responsively.

Power steering fluid maintenance typically involves these points:

• Checking fluid levels: It is important to keep the fluid at the recommended level to prevent pump damage and steering issues.
• Inspecting fluid condition: Old or contaminated fluid may appear dark or have particles and should be replaced.
• Flushing and replacing fluid: Scheduled replacement every 50,000 to 100,000 km (or as per the service manual) helps maintain system longevity and performance.
• Checking for leaks: Any drop in fluid levels without external top up suggests leaks that require immediate attention.

For those maintaining classic or older Commodores with hydraulic power steering, using the right type of power steering fluid is crucial. Holden recommends specific fluid types compatible with the system's seals and components. Using incorrect fluid can lead to premature wear or failure of the system.

In any case, electric power steering in the 2018 Holden Commodore has made traditional hydraulic fluids obsolete for the majority of owners. This upgrade means less fuss and more reliability when it comes to steering system maintenance. Instead of checking fluid levels, drivers can rely on diagnostics from the vehicle's onboard systems to alert them to any steering-related issues.

Ultimately, whether your 2018 Holden Commodore uses power steering fluid depends on its steering technology. Most models today favour electric power steering for its efficiency and reduced maintenance demands. If your vehicle is one of these, then you can breathe easy knowing power steering fluid worries are behind you. But if you are servicing a variant with hydraulic steering, caring for your power steering fluid remains an important aspect to keep your Commodore steering like new.