Coolant color code cracked: the definitive guide for subaru forester owners

Coolant, also known as antifreeze, is a crucial fluid in your Subaru Forester’s cooling system. It helps regulate engine temperature, preventing overheating and freezing. Different manufacturers use different colors of coolant, which can be confusing for car owners.

Subaru Forester Coolant Color

The Subaru Forester uses blue coolant. This is a specific color designated by Subaru and should be used exclusively in your vehicle. Using the wrong color coolant can lead to compatibility issues and damage to your engine.

Coolant Types

There are three main types of coolant used in vehicles:

• Inorganic Coolant (Green or Yellow): Traditional coolant with a service life of 2-3 years.
• Organic Acid Technology (OAT) Coolant (Orange or Red): Longer-lasting coolant with a service life of 5-10 years.
• Hybrid Organic Acid Technology (HOAT) Coolant (Blue): A combination of inorganic and OAT coolants, offering a balance of performance and longevity.

Why Blue Coolant for Subaru Forester?

Subaru uses blue coolant because it is a HOAT coolant. HOAT coolants are formulated with organic acids that provide excellent corrosion protection and heat transfer capabilities. They also have a higher boiling point and lower freezing point than traditional coolants.

When to Change Coolant

The recommended coolant change interval for a Subaru Forester varies depending on the type of coolant used:

• Inorganic Coolant: Every 2-3 years or 30,000 miles
• OAT Coolant: Every 5-10 years or 50,000-100,000 miles
• HOAT Coolant (Blue): Every 5-7 years or 75,000 miles

Checking Coolant Level and Condition

Regularly check your coolant level and condition. The coolant reservoir is typically translucent, allowing you to see the fluid level. If the level is low, top it up with the correct type of coolant.

Inspect the coolant for any signs of discoloration, sediment, or bubbles. These can indicate contamination or degradation, requiring a coolant change.

Flush and Fill

When changing the coolant, it is important to perform a flush and fill. This process involves draining the old coolant, flushing the system with water, and then filling it with the new coolant. This ensures that all the old coolant is removed and the system is properly protected.

Safety Precautions

Coolant is toxic, so handle it with care. Wear gloves and avoid contact with skin and eyes. Keep it out of reach of children and pets.

In a nutshell: Ensuring Optimal Cooling Performance

Using the correct color coolant in your Subaru Forester is essential for maintaining optimal cooling performance. Blue coolant is the specified coolant for this vehicle, offering the best protection and longevity. By following the recommended maintenance schedule and checking the coolant regularly, you can ensure a trouble-free cooling system for your Forester.

Common Questions and Answers

Q: What happens if I use the wrong color coolant in my Subaru Forester?
A: Using the wrong coolant can lead to compatibility issues, corrosion, and reduced cooling efficiency.

Q: How do I know if my coolant needs changing?
A: Check the coolant level and condition regularly. Discoloration, sediment, or bubbles indicate the need for a change.

Q: Can I mix different types of coolant?
A: No, it is not recommended to mix different types of coolant. This can lead to chemical reactions and reduced performance.

Q: How often should I flush and fill the coolant system?
A: Follow the manufacturer’s recommended interval, which varies depending on the type of coolant used.

Q: How do I dispose of used coolant?
A: Used coolant is toxic and must be disposed of properly. Contact your local auto parts store or waste management facility for instructions.