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When manufacturers want to extend the life of their engines, they often use extended life antifreeze coolant. Extended life antifreeze coolants are coolants that help to keep engines cool in the summer and winter alike. They are known to last longer than conventional coolants. They are also great at preventing corrosion and scaling, thereby prolonging the lifespan of the engine. This coolant is available in two main types.
Organic Acid Technology (OAT)
OAT coolants are made with organic acids. They have corrosion inhibitors that protect metal parts. Since they do not contain phosphates, silicates, or borates, they can provide long-lasting protection for the water pump and the entire cooling system. OAT is available in different colors, including purple, green, blue, and red. The color is not an indication of the formulation. It is simply a way to differentiate coolants from one another. OAT has a lifespan of up to 5 years or 150,000 miles.
Nitrited Organic Acid Technology (NOAT)
NOAT is a hybrid. It contains the nitrite corrosion inhibitor together with the organic acids used in OAT. This makes NOAT suitable for both light and heavy-duty vehicles. NOAT is mostly used in the coolants of diesel engines. The nitrite helps to provide a protective layer on the surface of the metal parts. Like OAT, NOAT does not contain phosphates, silicates, and borates. NOAT is available in various colors, including orange and yellow. The color, once again, is not an indication of the formulation. NOAT has a lifespan of about 5 years or 300,000 km.
The specifications for extended life antifreeze are designed to address the requirements of different vehicle types and ensure the safety and reliability of the cooling system. Here are some common specifications:
Color Coding
Extended life antifreeze coolants are often distinguished by their color codes. These colors indicate the formulation type and help prevent mixing incompatible coolants. Common colors include:
- Orange: Generally indicates a formulation based on organic acid technology (OAT).
- Green: Usually denotes a traditional inorganic additives (IAT) formulation.
- Yellow: Often represents a hybrid organic acids technology (HOAT) formulation combining OAT and IAT elements.
Boiling Point
The boiling point of antifreeze is crucial to preventing engine overheating. The extended life antifreeze coolants have a higher boiling point than traditional coolants. This feature reduces the risk of coolant vaporization in high-temperature circumstances. The boiling point is specified in Fahrenheit and Celsius.
Freezing Point
Like the boiling point, the freezing point is also vital. Extended life antifreeze coolants are designed to maintain a lower freezing point to avoid coolant freezing in extreme cold conditions. The freezing point is also specified in Fahrenheit and Celsius.
pH Level
The pH level of antifreeze coolant is crucial to the health of the cooling system. The extended life antififreeze coolants have a neutral to slightly alkaline pH level (6-8). This range helps to reduce the corrosion of metal parts in the cooling system.
Proper maintenance of extended life antififreeze is important to ensure its effectiveness and prolong its lifespan. Here are some key aspects of the maintenance of the extended life antififreeze:
Cooling System Inspection
Regular cooling system inspections are necessary. Look for signs of leaks, coolant loss, and hose wear. Ensure the cooling system components, such as the water pump and thermostat, are in good condition. A well-functioning cooling system is crucial to the quality and lifespan of antifreeze.
Coolant Level Check
The coolant level should be checked regularly. If the level is low, it may indicate leaks or coolant loss. Top up the coolant to the recommended level and address the cause of the coolant loss.
Coolant Change
Although the extended life antififreeze coolants have a longer lifespan, a periodic coolant change is still necessary. The coolant should be changed every 5 years or 100,000 kilometers, depending on which comes first. This interval helps prevent the degradation of coolant and maintain its performance.
Mixing Coolants Avoidance
Avoid mixing different types or brands of coolants. This can cause performance degradation and even damage to the cooling system. If a coolant change is needed, thoroughly drain the old coolant before adding the new one.
When buying extended life antifreeze coolants, business buyers need to consider some important factors to ensure they get the right product for their needs. Here are some of those factors.
Compatibility
Business buyers need to ensure that the coolant they choose is compatible with the systems they want to use it in. They should check the specifications and recommendations of the manufacturers.
Quality
Quality is an important factor to consider when buying extended life antifreeze coolants. Alibaba.com has multiple suppliers offering high-quality extended antifreeze coolants. To buy from a reliable supplier, business buyers need to do their due diligence and verify the authenticity of the supplier.
Application
Different applications require different types of coolants. For instance, the coolant used in heavy-duty trucks should be more superior than the one used in light-duty vehicles. This is because heavy-duty trucks have more powerful engines that generate a lot of heat.
Temperature range
Different extended life antifreeze coolants have different temperature ranges. Business buyers need to choose a coolant with a temperature range suitable for the environment they are operating in. For instance, if they are working in a place with extremely low temperatures, they need a coolant with a low freeze point.
Freeze and boiling points
Business buyers need to consider the coolant's freeze and boiling points. The coolant they choose should have a freeze point that is well below the expected low temperatures and a boiling point that is well above the high temperatures. This will help prevent the coolant from freezing or boiling, maximizing its effectiveness.
Antifreeze is generally added to the radiator of a car's cooling system. The coolant reduces the freezing point of water in the cooling system. Here are steps on how to replace it:
Preparation
Get the right extended life antifreeze coolant for the vehicle, read the instructions on the label to understand how to use it. Get a funnel and a radiator cap, and ensure the vehicle is on a flat surface.
Drain the old coolant
Put a drain pan under the vehicle's radiator and open the drain valve to let the old coolant out. Wash the drain valve and ensure it is working. Flushing gets rid of the old coolant and any other thing like debris that may be in the cooling system.
Refill the cooling system
Close the drain valve and fill the system with water. Start the vehicle and let it run for some minutes. This helps the water and coolant mix well. Turn on the heater and let it run for some minutes, then drain the water. This helps get rid of the air bubbles in the system. Water and coolant will be drained until they run out. This process should be repeated several times until the coolant and water coming out are clean.
Add new coolant
Once the old coolant is drained, the vehicle manufacturer’s manual should be used to add new extended life antifreeze. The manual indicates the recommended coolant type and the proper proportions, whether 50-50 or another ratio. Start the vehicle and let it run for some minutes. This helps the water and coolant mix well. Check for leaks, especially around the hoses and connections, and ensure the level of the coolant is at the recommended level.
Q1. How often should the antifreeze be replaced?
A1. Traditionally, it was recommended to change antifreeze every two years or 30,000 miles. However, new long-life formulations can last up to five years or 100,000 miles. Check the vehicle's manual for specific intervals.
Q2. Can old and new antifreeze be mixed?
A2. It's best not to mix different types of antifreeze as it can reduce effectiveness. If changing types is necessary, drain the old completely before adding the new.
Q3. What is the difference between standard and extended life coolants?
A3. Standard coolants use inorganic additives and need changing every two years. Extended life coolants use organic acid technology, providing protection for up to five years or more.
Q4. Is ready-to-use antifreeze as good as concentrate?
A4. Yes, but ensure the ratio suits the vehicle's needs. Ready-to-use usually contains 50/50 antifreeze and water, which is adequate.
Q5. Does the color of antifreeze indicate its type?
A5. Color alone isn't a reliable indicator. While some types are green and others red, there can be variations within categories. Always check the label to identify the correct type.
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