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(Top 7) Best Coolant For Subaru Outback in 2024

Looking to keep your Subaru Outback running smoothly? In this article, we’ve compiled a list of the top 7 coolant products for Subaru Outback maintenance. Whether you’re gearing up for routine maintenance or need a reliable coolant option, we’ve got you covered with some cool picks. Let’s dive in and explore the best options to keep your Outback in top shape!

1
PEAK OET Extended Life Blue Antifreeze 1 Gal
✯ Highly recommended ✯
PEAK OET Extended Life Blue Antifreeze 1 Gal
9.6
Amazon.com
2
Subaru Super Coolant 50/50 - Genuine OEM
Effective coolant
Subaru Super Coolant 50/50 - Genuine OEM
9.6
Amazon.com
3
Prestone AF2100-6PK Antifreeze - 1 Gallon
Solid Choice
Prestone AF2100-6PK Antifreeze - 1 Gallon
9.1
Amazon.com
4
A-Premium Expansion Tank for Subaru Models
Quality cooling solution
A-Premium Expansion Tank for Subaru Models
8.2
Amazon.com
5
Dorman Coolant Reservoir for Subaru Models
Dorman Coolant Reservoir for Subaru Models
8.9
Amazon.com
6
Subaru Radiator Assembly with Transmission Cooler
Subaru Radiator Assembly with Transmission Cooler
8.4
Amazon.com
7
A-Premium Radiator for Subaru Outback/Legacy
A-Premium Radiator for Subaru Outback/Legacy
8
Amazon.com
1

PEAK OET Extended Life Blue Antifreeze 1 Gal

✯ Highly recommended ✯
Amazon.com
9.6
Highly recommended
We highly recommend the PEAK OET Extended Life Blue 50/50 Prediluted Antifreeze/Coolant for Asian Vehicles in a 1-gallon size. It offers excellent corrosion protection, compatibility with other coolants, and doesn’t freeze, although it may not be suitable for all vehicle models.
PROS
  • Anti-freeze/coolant that doesn’t freeze
  • Compatible with other extended life antifreeze/coolants
  • Offers better corrosion protection and reduced cavitation
Drawbacks
  • May not be suitable for all vehicle models
  • Some users may prefer a concentrate formula for customization

Our PEAK OET Extended Life Blue 50/50 Prediluted Antifreeze/Coolant for Asian Vehicles in a 1-gallon size is the perfect solution to keep your engine cooling system in top shape. With advanced formulation that prevents rust and corrosion, this antifreeze/coolant is fully compatible with other extended life products. Customers rave about its ability to keep their engines cool, prevent freezing, and provide excellent corrosion protection. Plus, it’s equivalent to OEM standards, ensuring a clean and healthy engine cooling system.

Long-lasting coolant protection formula
  • 1 gallon size
  • Compatible with other extended life antifreeze/coolants
  • Contains Denatonium Benzoate
  • Advanced formulation for rust & corrosion protection
2

Subaru Super Coolant 50/50 – Genuine OEM

Effective coolant
Amazon.com
9.6
Effective coolant
We found the Subaru Pre Mixed 50/50 Super Coolant to be a reliable and effective product for maintaining our Subaru’s cooling system. It offers long-lasting protection, easy application, and is specifically formulated for Subaru vehicles. However, the higher price and limited availability in certain areas may be drawbacks to consider.
Benefits
  • Reliable performance
  • Effective engine temperature regulation
  • Compatibility with Subaru’s Boxer engines
Cons
  • Higher price compared to generic alternatives
  • Limited availability in some areas

We offer the Subaru Pre Mixed 50/50 Super Coolant, SOA868V9272, which is a genuine OEM product designed to provide long-lasting corrosion and rust protection for all components of your cooling system. This prediluted antifreeze/engine coolant is specifically formulated to prevent the use of poor quality water that could potentially cause damage. Our customers have found this coolant to be a reliable choice for their Subaru vehicles, ensuring smooth drives and worry-free performance even under demanding conditions. With its compatibility with Subaru’s Boxer engines and ease of installation, it’s a worthwhile investment for any Subaru owner looking for exceptional performance and peace of mind.

Premium Cooling Performance Formula
  • Long-lasting corrosion and rust protection
  • Prediluted formula for easy use
  • Genuine OEM product
  • Formulated for all cooling system components
3

Prestone AF2100-6PK Antifreeze – 1 Gallon

Solid Choice
Amazon.com
9.1
Solid Choice
Overall, the Prestone AF2100-6PK Extended Life 50/50 Antifreeze is a versatile choice for any vehicle, offering compatibility with all makes and models, extended life of 5 years or 150,000 miles, and effective corrosion prevention. However, some users may find the limited color options and packaging to be drawbacks.
PROS
  • Compatible with all makes and models of cars and light duty trucks
  • Extended life of 5 years or 150,000 miles
  • Prevents corrosion and enhances cooling system efficiency
Drawbacks
  • Limited color options
  • Packaging could be improved

Based on the provided information and reviews, the Prestone AF2100-6PK Extended Life 50/50 Antifreeze – 1 Gallon, (Pack of 6) is a versatile product suitable for all car and light duty truck models. This antifreeze is compatible with any coolant, offers long-lasting protection for up to 5 years or 150,000 miles, and helps prevent corrosion while improving cooling system efficiency. Customers have praised its good price, quality, and reliable shipping, making it a trusted choice for maintaining vehicle performance and longevity.

Advanced Cooling System Protection Solution
  • Compatible with all makes and models of cars and light duty trucks
  • Works with any antifreeze/coolant, regardless of color
  • Extended life of 5 years or 150,000 miles
  • Prevents corrosion and enhances cooling system efficiency
  • Provides protection against
4

Dorman Coolant Reservoir for Subaru Models

Amazon.com
8.9
Highly recommended
Based on the information provided, we can say that the Dorman 603-769 Front Engine Coolant Reservoir is a highly recommended product. It offers a direct replacement, durable construction, and seamless installation, making it an ideal solution for select Subaru models. However, potential buyers should be aware that shipping may be slow and the product is a bit pricey.
Advantages
  • Direct replacement
  • Ideal solution
  • Durable construction
  • Engineered for seamless installation
Cons
  • Slow shipping
  • Pricey

We have a durable and reliable engine coolant reservoir, the Dorman 603-769, designed to handle underhood heat and engine vibration with ease. This direct replacement part is engineered to seamlessly fit and function just like the original. Although it may be a bit pricey, customers have found it to be a worthwhile investment that does the job well. While shipping might be slow, many have appreciated the significant cost savings compared to local outlets. Overall, customers have noted a perfect fit with no complaints, making this reservoir an ideal solution for your Subaru Legacy or Outback.

Coolant Reservoir Replacement for Subarus
  • Direct replacement
  • Ideal solution
  • Durable construction
  • Engineered for seamless installation
5

Subaru Radiator Assembly with Transmission Cooler

Amazon.com
8.4
Convenient and functional
We found the A-Premium Engine Coolant Radiator Assembly to be a convenient solution for Subaru owners looking to replace their radiator. It offers easy installation, fits various Subaru models well, and includes a transmission oil cooler. However, be cautious of finicky transmission line connections that may lead to potential leaks.
Pros
  • Easy installation
  • Good fit for different Subaru models
  • Comes with a transmission oil cooler
CONS
  • Finicky transmission line connections
  • Potential for transmission fluid leaks due to loose connections

We offer an A-Premium Engine Coolant Radiator Assembly with Transmission Oil Cooler that is compatible with various Subaru models from 2005 to 2017. Customers have reported that it works perfectly in their Subarus, with one user noting that it fit their 2008 Outback Sport flawlessly. While installation was smooth for most, a reviewer mentioned that the transmission line connections can be finicky, requiring extra attention to prevent leaks. Overall, customers recommend this product for its great fit and good quality at a reasonable price.

Efficient Cooling Performance
  • Compatible with Subaru Forester 09-13, Impreza 08-11, Outback 05-09, Crosstrek 16-17
  • Includes Transmission Oil Cooler
  • Designed for 2.0L and 2.5L H4 Engine
  • Suitable for vehicles with Automatic Transmission
6

A-Premium Expansion Tank for Subaru Models

Quality cooling solution
Amazon.com
8.2
Quality cooling solution
We found the A-Premium Engine Coolant Overflow Recovery Expansion Tank to be a high-quality product that is compatible with various Subaru Legacy and Outback models. It is a direct replacement for OEM part numbers, includes a cap, and helps prevent coolant leaks. However, it may not fit all Subaru models and has limited color options available.
Pluses
  • Compatible with multiple Subaru models
  • High-quality construction
  • Direct replacement for OEM part numbers
  • Includes cap
  • Helps prevent coolant leaks
CONS
  • May not fit all Subaru models
  • Limited color options available

Upgrade your vehicle’s cooling system with the A-Premium Engine Coolant Overflow Recovery Expansion Tank with Cap. Designed to be compatible with a wide range of Subaru Outback and Legacy models from 2005 to 2019, this expansion tank is a reliable replacement for part numbers 45155AG00A and 45150AG01A. With a one-year unlimited mileage quality guarantee, you can trust in the durability and performance of this essential component. Keep your engine running smoothly and efficiently with this premium expansion tank.

Enhanced Cooling System Performance
  • Compatible with various Subaru Legacy and Outback models
  • High-quality construction
  • Direct replacement for OEM part numbers #45155AG00A, #45150AG01A
  • Includes cap
  • Helps prevent coolant leaks
  • Easy to install
7

A-Premium Radiator for Subaru Outback/Legacy

Amazon.com
8
Good fit but issues
Overall, the A-Premium Engine Coolant Radiator with Transmission Oil Cooler for Subaru Outback and Legacy models is a great fit for the specified vehicles, offering compatibility with H6 3.0L engines and automatic transmission. However, there have been some reported instances of leaks post-installation and potential compatibility issues with other Subaru models from the same years.
Advantages
  • Perfect fit for 2007 Subaru
  • Compatible with Subaru Outback 2005-2009 and Legacy 2008-2009 H6 3.0L
  • Includes Transmission Oil Cooler
  • Reference Numbers: 2779, CU2779, 45111AG04A
Cons
  • Some customers reported issues with leaks after installation
  • May not be compatible with all Subaru models within the specified years

We offer the A-Premium Engine Coolant Radiator with Transmission Oil Cooler compatible with Subaru Outback 2005-2009 and Legacy 2008-2009 3.0L models with automatic transmission. This radiator, with reference number 45111AG04A, includes a transmission oil cooler, ensuring optimal performance and efficiency. Customers have shared positive feedback, noting that it fits perfectly into their Subarus, like the 2007 model. Trust us to provide a high-quality radiator that meets your vehicle’s needs and delivers a precise fit for a seamless installation experience.

Efficient Cooling Performance
  • Compatible with Subaru Outback 2005-2009 and Legacy 2008-2009 H6 3.0L
  • Automatic Transmission support
  • Includes Transmission Oil Cooler
  • Reference Numbers: 2779, CU2779, 45111AG04A

Coolant Options for Outback

A-Premium Engine Coolant Radiator Assembly with Transmission Oil Cooler Compatible with Subaru Outback Legacy 2010 2011 2012 2013 2014, H6 3.6L, Automatic Trans.
A-Premium Engine Coolant Radiator Assembly with Transmission Oil Cooler Compatible with Subaru Outback Legacy 2010 2011 2012 2013 2014, H6 3.6L, Automatic...
Amazon.com

Top Coolants for Subaru Outback

  • Subaru Super Coolant
  • Pentofrost A1
  • Zerex Asian Vehicle Antifreeze/Coolant
  • Peak Long Life Antifreeze/Coolant
  • Valvoline Asian Vehicle Antifreeze/Coolant

Steps for Properly Using Coolant in Your Subaru Outback

  • Check the coolant level in your Subaru Outback’s reservoir: Locate the coolant reservoir under the hood and make sure the level is between the minimum and maximum marks
  • Top off the coolant if necessary: If the coolant level is low, add a 50/50 mixture of coolant and water to the reservoir to bring it up to the appropriate level
  • Monitor the coolant temperature gauge: Keep an eye on the temperature gauge on your dashboard to ensure that your Subaru Outback is running at the correct operating temperature, indicating that the coolant is doing its job effectively

Price Comparison for Best Coolant for Subaru Outback

  • Budget range ($10-$20): Basic coolant options suitable for regular maintenance, offering standard protection for your Subaru Outback’s cooling system
  • Mid-range ($20-$30): Premium coolant products with advanced formulation, offering enhanced protection against corrosion, rust, and overheating. Ideal for those looking for better performance and longevity
  • High-end ($30 and above): Top-tier coolant solutions with specialized additives for superior cooling system protection. These products may offer extended service intervals and compatibility with specific Subaru models like the Outback. Great for those seeking the best possible performance and durability

Factors to Consider When Choosing Coolant for Your Subaru Outback

  • Compatibility: Make sure the coolant is compatible with Subaru vehicles, including the Outback model. Look for coolants that are specifically formulated for use in Subaru engines to ensure optimal performance
  • Antifreeze Protection: Check the antifreeze protection level of the coolant. Ensure that it provides sufficient protection against freezing in cold temperatures and overheating in hot conditions. A coolant with a balanced antifreeze protection level is essential for maintaining the engine’s temperature
  • Longevity: Consider the longevity of the coolant. Look for coolants that offer long-lasting protection to minimize the frequency of coolant changes. Opting for a high-quality coolant can help extend the lifespan of your Subaru Outback’s cooling system

FAQs

How can I prevent my Subaru Outback from overheating due to coolant issues?

To prevent your Subaru Outback from overheating due to coolant issues, it’s important to regularly check and maintain your coolant levels. Ensure that the coolant is at the proper level and mix ratio as recommended by Subaru. Inspect for any leaks in the cooling system and address them promptly. Additionally, follow the manufacturer’s guidelines for coolant replacement intervals to keep the cooling system in top condition. If you notice any signs of overheating or coolant loss, have your Subaru inspected by a professional mechanic to diagnose and address the issue before it leads to more serious problems.

How can I check the coolant level in my Subaru Outback?

To check the coolant level in your Subaru Outback, start with a cold engine. Locate the coolant reservoir, typically a translucent plastic tank near the radiator. The coolant level should be between the “min” and “max” markers on the side of the reservoir. If it’s low, you can top it off with a 50/50 mix of coolant and water. Remember to never open the radiator cap on a hot engine to avoid burns.

What are the consequences of driving a Subaru Outback with low coolant levels?

Driving a Subaru Outback with low coolant levels can lead to serious consequences for the engine. The engine relies on coolant to regulate temperature and prevent overheating. Running the engine with low coolant levels can cause it to overheat, leading to potential engine damage such as warping of the cylinder head or even complete engine failure. It is essential to monitor and maintain proper coolant levels to ensure the optimal performance and longevity of your Subaru Outback.

What type of coolant is recommended for a Subaru Outback?

The type of coolant recommended for a Subaru Outback is the Genuine Subaru Long Life Coolant, also known as Super Coolant. It is specially formulated to work with Subaru vehicles and provide long-lasting protection for the engine. Always make sure to use the correct coolant for your Subaru Outback to maintain optimal performance and prevent damage to the cooling system.

What are the signs that my Subaru Outback needs a coolant flush?

When your Subaru Outback needs a coolant flush, you may notice several signs. Some common indicators include the coolant level dropping, the engine running hotter than usual, visible debris or rust particles in the coolant, and a sweet smell coming from the engine. It’s important to follow your manufacturer’s guidelines for coolant maintenance to keep your vehicle running smoothly.

What is the typical coolant capacity for a Subaru Outback?

The typical coolant capacity for a Subaru Outback is around 7.4-7.7 quarts, depending on the specific model year and engine type. It is always best to consult your vehicle’s owner’s manual or a certified mechanic for the most accurate information.

Is it normal for a Subaru Outback to consume coolant?

Yes, it is normal for a Subaru Outback to consume some coolant over time. This can happen due to small leaks, evaporation, or minor seepage. However, if you notice a significant or sudden drop in coolant levels, it could indicate a more serious issue that should be inspected by a mechanic.

Can I use distilled water to dilute coolant in my Subaru Outback?

Yes, you can use distilled water to dilute coolant in your Subaru Outback. It is recommended to mix coolant with distilled water in a 50/50 ratio to provide the necessary protection against freezing and overheating in your vehicle’s cooling system. This combination helps prevent corrosion and ensures optimal engine performance.

Can I mix different brands of coolant in my Subaru Outback?

Absolutely, mixing different brands of coolant in your Subaru Outback is not recommended. It is always best to use the coolant recommended by the manufacturer to ensure the proper functioning and longevity of your vehicle’s cooling system. Different brands may have different formulations that could potentially react negatively with each other, causing damage to the system. It’s better to stick with one brand of coolant to avoid any potential issues.

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