Power steering fluid, while essential for smooth and effortless vehicle operation, isn't entirely benign. Its corrosive potential is a concern that many car owners, mechanics, and even DIY enthusiasts have. This article will explore the corrosive nature of power steering fluid, addressing common questions and providing crucial safety advice.
What is Power Steering Fluid Made Of?
To understand its corrosive potential, we need to look at the composition of power steering fluid. Different formulations exist, but they typically contain:
- Polyglycols: These form the base fluid and provide lubricating properties.
- Additives: These include detergents, anti-oxidants, anti-wear agents, and corrosion inhibitors. The specific additives vary between brands and formulations (conventional, synthetic).
- Other chemicals: Depending on the type of fluid, other chemicals might be present to enhance performance characteristics.
While modern power steering fluids incorporate corrosion inhibitors, the presence of other chemicals can still pose a risk under certain conditions.
Is Power Steering Fluid Corrosive to Metal?
The short answer is: Yes, power steering fluid can be corrosive, but the degree of corrosiveness depends on several factors. The corrosion inhibitors in modern formulations are designed to mitigate this, but prolonged exposure, especially to specific metals or in the presence of contaminants, can lead to degradation. Older, less sophisticated formulations were more prone to corrosion than modern ones.
Some metals are more susceptible than others. Aluminum, for instance, can be particularly vulnerable to certain components in power steering fluid, especially if the fluid is degraded or contaminated.
How Can I Tell If My Power Steering Fluid Is Corrosive?
Unfortunately, there's no easy home test to determine the corrosiveness of your power steering fluid. Visual inspection can only reveal discoloration or contamination. If you suspect corrosion or have a leak, it's advisable to consult a mechanic for professional diagnosis and fluid testing. They have the tools to analyze the fluid and determine its condition.
What Happens if Power Steering Fluid Leaks?
A power steering fluid leak isn't just a matter of low fluid levels. The leaked fluid can:
- Damage paint: Prolonged exposure of the fluid to painted surfaces can lead to discoloration and even corrosion of the paint.
- Corrode metal components: As mentioned earlier, prolonged contact can damage metal parts of your vehicle.
- Harm the environment: Power steering fluid is not environmentally friendly. Disposal should be done according to local regulations.
What Should I Do if Power Steering Fluid Spills?
In case of a spill:
- Safety First: Wear protective gloves and eye protection.
- Absorb the spill: Use absorbent materials like kitty litter or specialized spill kits to soak up the fluid.
- Proper Disposal: Dispose of the contaminated materials according to local regulations – never pour it down the drain or into the environment.
Can Power Steering Fluid Damage Rubber or Plastic?
While not as readily corrosive to rubber and plastics as it is to certain metals, prolonged exposure can cause swelling, softening, or degradation of certain types of seals and hoses within the power steering system. This is why regular maintenance and fluid changes are crucial.
How Often Should I Change My Power Steering Fluid?
This depends largely on the vehicle's manufacturer recommendations and the type of fluid used. Consult your owner's manual for guidance. Regular fluid changes are vital to prevent corrosion, maintain system efficiency, and extend the lifespan of the power steering system components.
Conclusion
While modern power steering fluids are formulated with corrosion inhibitors, it's crucial to remember that they are not entirely inert. Proper maintenance, prompt attention to leaks, and safe handling practices are essential to mitigate potential corrosion and ensure the long-term health of your vehicle's power steering system. If you're unsure about anything, always consult a qualified mechanic.
