Your car relies on several essential fluids to run smoothly and efficiently. Among the most critical are coolant, brake fluid, and transmission fluid. Each plays a unique role in maintaining your vehicle’s performance and longevity. Here’s what they do and when you should change them.
Coolant (Antifreeze)
What It Does:
- Regulates engine temperature by dissipating excess heat.
- Prevents overheating and freezing.
- Protects the engine from corrosion and rust.
When to Change It:
- Most manufacturers recommend changing coolant every 30,000 to 50,000 miles or every 2 to 5 years, depending on the type of coolant.
- Signs you need a coolant change include overheating, a sweet smell inside the car, or visible rust in the coolant reservoir.
Brake Fluid
What It Does:
- Transfers force from the brake pedal to the brake components.
- Maintains braking efficiency by resisting moisture absorption.
- Helps prevent brake fade and failure.
When to Change It:
- Typically every 2 to 3 years, or as specified in your vehicle’s owner’s manual.
- Signs of bad brake fluid include a soft or spongy brake pedal, reduced braking performance, or a warning light on the dashboard.
Transmission Fluid
What It Does:
- Lubricates and cools transmission components.
- Ensures smooth gear shifts and reduces friction.
- Protects internal transmission parts from wear and tear.
When to Change It:
- Automatic transmission fluid (ATF) should generally be changed every 30,000 to 60,000 miles.
- Manual transmission fluid should be replaced around 30,000 to 50,000 miles, depending on driving conditions.
- Signs of deteriorating fluid include rough or delayed shifting, a burning smell, or fluid that appears dark or dirty.
Final Tips
- Always check your owner’s manual for manufacturer recommendations.
- Regular fluid checks and maintenance can prevent costly repairs.
- Use the correct type of fluid for your vehicle to avoid damage.
Keeping these fluids fresh and at the right levels will help ensure your car runs safely and efficiently for years to come.
