Power steering fluid, while essential for smooth driving, isn't entirely benign. Its corrosive potential is a concern for many car owners, and understanding its properties is crucial for proper vehicle maintenance and safety. This article will delve into the corrosive nature of power steering fluid, examining its composition and the potential damage it can cause. We'll also address common questions surrounding its corrosiveness.
What is Power Steering Fluid Made Of?
Power steering fluid's composition varies depending on the type (mineral-based, synthetic, or a blend). However, the key components generally include:
- Base Oil: This forms the fluid's foundation and provides lubrication. Mineral-based oils are derived from petroleum, while synthetic oils are artificially created.
- Additives: These are crucial for enhancing the fluid's performance. They include:
- Antioxidants: Prevent the fluid from breaking down due to oxidation.
- Anti-wear agents: Reduce friction and wear on power steering components.
- Corrosion inhibitors: Protect metal parts from corrosion. This is a key component relevant to our main question.
- Foam inhibitors: Reduce foam formation.
- Viscosity modifiers: Maintain the fluid's viscosity (thickness) across varying temperatures.
While corrosion inhibitors are present, the fluid's inherent chemical properties and potential for contamination mean that it's not completely inert.
How Corrosive is Power Steering Fluid?
Power steering fluid's corrosiveness is relatively low compared to other automotive fluids like battery acid or brake fluid. However, prolonged exposure or specific circumstances can lead to corrosion. The presence of water contamination, for instance, significantly increases its corrosive potential. Water can trigger hydrolysis, breaking down the fluid and creating acidic byproducts. This is especially true for mineral-based fluids, which are more susceptible to water degradation.
The metals most vulnerable to power steering fluid corrosion are aluminum and magnesium alloys, often found in modern power steering components. While the inhibitors generally protect these metals, degradation over time or with contamination can lead to pitting and eventual failure.
Can Power Steering Fluid Damage Paint?
Yes, prolonged contact between power steering fluid and paint can cause damage. While not as immediately aggressive as other chemicals, the fluid's potential to dissolve certain paint components and leave staining is significant. Immediate cleaning is crucial if a spill occurs.
Is Power Steering Fluid Harmful to Skin?
While not as toxic as some other automotive fluids, prolonged or repeated skin contact with power steering fluid can cause irritation, dryness, and dermatitis. Always wear appropriate gloves when handling power steering fluid or cleaning up spills.
What Happens if Power Steering Fluid Leaks?
A power steering fluid leak is a serious issue that needs immediate attention. Besides the loss of power steering assistance, the leaked fluid can damage surrounding components, including paint and rubber seals. The fluid can also attract dirt and grime, potentially exacerbating corrosion.
Minimizing Corrosion Risks
Proper maintenance is crucial to minimize the risk of corrosion. This includes:
- Regular fluid changes: Following the manufacturer's recommended intervals for power steering fluid changes significantly reduces the risk of degradation and contamination.
- Checking for leaks: Regular inspection of the power steering system for leaks helps prevent damage caused by prolonged fluid exposure.
- Proper fluid disposal: Power steering fluid should be disposed of properly, following local environmental regulations, to prevent environmental contamination and potential hazards.
In conclusion, while power steering fluid is not highly corrosive compared to other automotive fluids, its potential for causing damage, especially with contamination or prolonged exposure, should not be underestimated. Regular maintenance and preventative measures are essential to ensure the longevity and safe operation of your vehicle's power steering system.
