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Discover the Best Coolant for Your 6.7 Cummins Engine

Published by Dustin Babich on

The 6.7 cummins engine requires a coolant that meets the standards specified by chrysler company, also known as ms-10850. Most coolants of this type are made of ethylene glycol mixed with water in a 50:50 ratio.

The 6. 7 cummins engine is a heavy-duty diesel engine produced by the cummins company. It is typically used in large pickup trucks, commercial vans, motorhomes, and other heavy-duty vehicles. As with any engine, regular maintenance is essential, and one critical aspect of that maintenance is ensuring that the engine’s coolant is of the correct type and quality.

The coolant that the 6. 7 cummins engine requires is known as ms-10850, which is the standard specified by chrysler. This coolant is usually a mix of ethylene glycol and water, and it is available from a variety of manufacturers. In this article, we will discuss the importance of using the correct coolant for the 6. 7 cummins engine and how to ensure that you are using the right type of coolant.

Understanding Coolants And Their Role In Your Engine’S Performance

Coolant is an essential component of your 6. 7 cummins engine, helping to regulate its temperature and prevent overheating. Coolants are a mixture of water and antifreeze, with different formulations available depending on the engine’s requirements. They work by absorbing and dissipating heat generated during engine operation, protecting it from damage.

Choosing the right coolant for your 6. 7 cummins is crucial, as using the wrong one can lead to corrosion, clogging, and other issues. Always follow the manufacturer’s recommendations and check the coolant’s properties to ensure that it is compatible with your engine.

Regularly checking your coolant level and quality is also important to maintain engine performance and longevity. Understanding coolants and their role in your engine’s performance is essential to protecting your investment and ensuring your engine runs smoothly for years to come.

Types Of Coolants And Their Features

Coolant is essential for the proper functioning of a 6. 7 cummins engine. There are several types of coolant that can be used. Ethylene glycol (eg) coolant is the most common coolant used in automobiles. It is a toxic substance and should be handled with care.

Propylene glycol (pg) coolant is less toxic and has a lower boiling point than eg coolant, making it ideal for use in extreme temperatures. Hybrid organic acid technology (hoat) and organic acid technology (oat) coolants are both extended-life coolants that offer better protection against corrosion.

Nitrite organic acid technology (noat) coolant is designed specifically for diesel engines and offers increased protection against cavitation. When choosing a coolant for your 6. 7 cummins engine, it is important to consider the specific features of each coolant type to ensure the optimal performance of your engine.

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Factors To Consider When Choosing A Coolant For Your 6.7 Cummins Engine

Choosing the right coolant for your 6. 7 cummins engine is crucial. Make sure the coolant you select is compatible with your engine to avoid damaging it. Consider the operating temperature range of the coolant to ensure it can maintain optimal performance in various weather conditions.

Look for a coolant that offers longevity to ensure it doesn’t need replacement too frequently. Corrosion protection is also vital to prevent rust and other damages. Finally, choose a coolant that’s environmentally friendly to minimize any negative impact on the environment.

By considering these factors, you can ensure your 6. 7 cummins engine runs smoothly and efficiently for a long time.

Advantages And Disadvantages Of Using Specific Coolant Types For Your 6.7 Cummins Engine

Using the right coolant type is important for optimal performance of your 6. 7 cummins engine. Eg coolants provide extended service life, but may not be suitable in extreme cold temperatures. Pg coolants offer excellent corrosion resistance, but are not recommended for high mileage engines.

Hoat coolants are compatible with most aluminum components, but can be more expensive than others. Oat coolants provide a longer service life and better heat transfer, but may not be compatible with older engines. Noat coolants offer extended service life and are compatible with all engine types, but can be more expensive than other types.

Ultimately, the best choice will depend on your specific needs and preferences.

Understanding Your Engine’S Requirements

Understanding your engine’s requirements is vital to ensure optimal performance and longevity. Manufacturer recommendations for coolant type and capacity should always be followed. For a 6. 7 cummins engine, the recommended coolant type is an extended life coolant (elc) with a capacity of 3.

9 gallons. Regular maintenance is also essential to keep the coolant functioning optimally. This includes checking the level and condition of the coolant, flushing the system at recommended intervals, and replacing the coolant as needed. Neglecting proper maintenance can result in engine damage and costly repairs.

By following the manufacturer’s recommendations and performing regular maintenance, you can keep your 6. 7 cummins engine running smoothly for years to come.

Evaluating Your Coolant Options

When it comes to maintaining your 6. 7 cummins engine, selecting the correct coolant is crucial. Evaluating your options entails selecting the appropriate coolant for your engine. The coolant should be compatible with other fluids in your truck. Before making a decision, consider the quality and performance features of your coolant.

Additionally, the coolant should be in line with your truck manufacturer’s recommendations. Special performance features such as lower operating temperatures and extended coolant lifespan need to be taken into account for optimal engine performance. It’s critical to choose the right coolant and protect the investment you’ve made in your vehicle.

Preparing Your Engine And Coolant For Optimal Performance

Preparing your engine and coolant for optimal performance is imperative for smooth and efficient functioning. Before adding new coolant, it’s crucial to flush and clean your engine, ensuring that the system is free of any debris or rust that may affect its performance.

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To properly add coolant, follow the manufacturer’s guidelines and use the recommended type of coolant for your engine and climate. Regular maintenance is key to ensuring your engine’s coolant system remains in optimal condition. This includes checking the coolant level, visual inspection for leaks, and replacing the coolant as recommended by the manufacturer.

Always prioritize the health of your engine’s coolant system to ensure longevity and a high level of performance.

Choosing The Best Coolant For Your 6.7 Cummins Engine

Coolant is a vital component in any engine’s performance, including the 6. 7 cummins. Understanding the importance of coolant is essential when choosing the best option. Evaluating the available options and selecting the coolant that meets your needs is crucial.

To ensure maximum performance and longevity, taking steps to prepare and maintain your coolant system is necessary. Regularly checking and changing the coolant as needed will keep your engine running smoothly. Keeping the radiator and engine clean and checking for leaks is essential for optimal performance.

Ultimately, choosing the right coolant and properly maintaining the coolant system will contribute to the longevity and performance of your 6. 7 cummins engine.

Frequently Asked Questions Of What Kind Of Coolant Does A 6.7 Cummins Take

What Type Of Coolant Does A 6.7 Cummins Require?

The 6. 7 cummins engine requires the use of fully formulated, ethylene glycol-based, long-life coolant.

How Often Should You Change The Coolant In A 6.7 Cummins?

It is recommended to change the coolant in a 6. 7 cummins every 100,000 miles or five years, whichever comes first.

Can I Mix Different Coolants In My 6.7 Cummins?

No, it is not recommended to mix different types of coolants in a 6. 7 cummins engine. Mixing coolants may cause chemical reactions that can damage the engine’s components.


When it comes to taking care of your 6. 7 cummins engine, using the right kind of coolant is crucial. Whether you are running your vehicle in extreme heat or cold, the use of high-quality ethylene glycol-based coolants such as fleetguard es compleat or valvoline zerex g-05 is recommended.

These coolants offer improved heat transfer and better engine protection against rust, corrosion, and cavitation erosion. Moreover, they also provide longer service intervals and reduced maintenance costs. Remember to always check the coolant level, color, and quality regularly to ensure the proper functioning of your engine.

Neglecting your engine’s coolant system can result in poor performance, engine damage, and costly repairs. By using the right coolant and taking proper maintenance steps, you can ensure that your 6. 7 cummins runs smoothly and efficiently for years to come.

Dustin Babich

Dustin Babich

Dustin Babich

As the passionate author behind, Dustin Babich is a knowledgeable expert in all things automotive. With a deep understanding of car tools, equipment, engines, and troubleshooting techniques, Dustin Babich shares invaluable insights, practical tips, and effective solutions to empower readers in overcoming car-related challenges.


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