Katerina Swanson
BMW cars use blue cooling fuel, also known as BMW Blue coolant, which is silicate and phosphate-free. This type of coolant has a longer lifespan inside the car's cooling system and is designed to protect the engine from freezing in cold temperatures. The blue coolant has been in use since the 1990s and is specifically formulated for BMW/MINI cars, with the colour possibly being a nod to the colours of the State of Bavaria in Germany, where BMW is from.
| Characteristics | Values |
|---|---|
| Reason for blue coolant use | Silicate and phosphate-free, longer lifespan |
| Coolant type | Liquid or gas |
| Coolant composition | Half water and half ethylene glycol |
| Coolant flush frequency | Every 30,000 miles or every two years |
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What You'll Learn
BMW blue coolant is silicate and phosphate-free
BMW's blue coolant is recommended for use in BMW cars because it is silicate and phosphate-free, which means it has a longer lifespan inside the car's cooling system. It is also nitrite-free and amine-free, which reduces the possibility of harmful deposit formation.
Silicates are hard particles that scrub the internals of the engine. However, they can cause wear on coolant pump seals, which is why some manufacturers recommend using silicate-free coolants. Phosphates are used as a co-corrosion inhibitor in some coolants, but they can also come out of solution as hard precipitates and damage water pump seals, especially in areas with high mineral content in the water supply.
BMW's blue coolant is also referred to as Glysantin G-48, which was previously used by Volkswagen and Mercedes-Benz. It is an ethylene glycol-based antifreeze that is compatible with other coolants such as Honda's blue coolant. However, it should not be mixed with green coolant as it can create a gelatinous mess that will clog the system.
When using BMW's blue coolant, it is important to follow the proper procedure for flushing and refilling the cooling system. This includes draining the radiator and the block, flushing with distilled water, and then refilling with a 50/50 mix of coolant and distilled water.
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It has a longer lifespan in the car's cooling system
Coolant is a liquid or gas substance used to regulate a car's engine temperature. It is usually half water and half ethylene glycol. Water is used to transfer heat, while ethylene glycol is used to reduce the freezing point of the liquid. This is especially important in colder climates.
BMW has developed its own coolant, which is blue in colour. This blue coolant is silicate and phosphate-free. This is important because some manufacturers prefer silicates, while others prefer phosphates. For example, Europeans tend to prefer silicates, while the Japanese prefer phosphates.
The blue coolant has a longer lifespan inside the car's cooling system. This means that it does not need to be changed as frequently as other coolants. According to Richmond BMW, a BMW coolant flush is typically recommended every 30,000 miles or every two years. However, there may be instances where the vehicle can go longer without a flush.
It is crucial to do your research if you plan to buy, flush, or replace the coolant in your car. Many models will not be compatible with just any coolant or antifreeze. For example, some older engine designs will not tolerate OAT coolants because of the solder used. It is always recommended to check your BMW owner's manual or consult a trained technician to ensure you are using the correct type of coolant and that it is diluted correctly.
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Coolant is a liquid or gas used to regulate engine temperature
Coolant is a substance, typically a liquid, used to reduce or regulate the temperature of a system. It is commonly used in automotive and HVAC applications. In the context of cars, coolant, also known as antifreeze, is essential for protecting engines from overheating and lubricating moving parts to prevent damage. It is used in conjunction with a liquid cooling system, which includes components such as the water pump, radiator, radiator hoses, fan, and thermostat.
The liquid cooling system circulates the coolant throughout the engine and back through the radiator. Coolant exits from the bottom of the radiator after it has cooled, and is then drawn into the water pump, which pumps it into the engine's block and head. Here, the coolant absorbs excess heat to control the engine temperature. It is then returned to the top of the radiator, where it is cooled again. This continuous circulation of coolant helps maintain the ideal temperature for the engine to function optimally.
There are several types of coolants available for automotive use. The most common type is glycol-based coolant, which consists of a mixture of ethylene glycol, propylene glycol, or other organic chemicals with water and additive packages. Propylene glycol is considered less toxic than ethylene glycol. Coolants may also contain corrosion inhibitors and antifreeze to prevent freezing in cold temperatures.
BMW, for example, offers a "Blue" coolant that is recommended for its vehicles due to its silicate and phosphate-free formula, which contributes to a longer lifespan within the car's cooling system. While some car manufacturers recommend specific types of coolants, it is generally agreed upon that using the correct coolant and maintaining the cooling system are crucial for optimal engine performance and longevity.
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Coolant colours vary, but they don't indicate type
Coolant colours can vary and include yellow, blue, orange, red, pink, turquoise, purple and green. However, the colour does not indicate the type of coolant. Coolant colours used to be determined by the type of chemicals used to prevent corrosion, but this is no longer the case.
In the past, older coolants that used Inorganic Additive Technology (IAT) were usually blue or green. These coolants would typically need to be changed every two years or every 60,000 miles. Following this, Organic Acid Technology (OAT) coolants were introduced, which offered better protection for cooling systems and extended the life of the coolant.
Today, coolant colours are not regulated in the industry and there is no way to determine a specific type of coolant based on its colour alone. The shade of the coolant has little bearing on its chemical make-up. For example, BMW's blue coolant is silicate and phosphate-free, while Ford's orange coolant does not contain silicate.
It is important to note that different coolants should not be mixed together unless they are specifically designed to be mixed. Mixing conventional and OAT coolant types, for instance, can destroy the cooling system. It is generally recommended to stick to the same coolant type and colour that the vehicle was filled with by the manufacturer.
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BMW has its own coolant, but other cars use different types
BMW has developed its own coolant, which is blue in colour and is silicate and phosphate-free. This gives it a longer lifespan inside the car's cooling system. While BMW uses blue coolant, other car manufacturers use different types of coolants, such as orange, yellow, purple, red, and green. These variations exist because each manufacturer has its own theories on what works best for their specific metal, alloy, and engine design.
For example, some manufacturers prefer coolants with silicates, while others do not. Similarly, coolant colours can vary within a single manufacturer's models, with different colours being specified for different years or models. This diversity in coolant types and colours can be confusing for car owners, and it is crucial to do your research before purchasing, flushing, or replacing the coolant in your car.
While the colour of the coolant is not a reliable indicator of its type, Organic Acid Technology (OAT) coolants are commonly orange, yellow, red, or purple. Hybrid Organic Acid Technology (HOAT) coolants are typically orange and yellow, and Inorganic Acid Technology (IAT) coolants are often green, although some manufacturers sell them in blue.
It is always essential to refer to your car's owner's manual or consult a trained technician to determine the specific type and colour of coolant recommended for your vehicle. The owner's manual will also provide information on the recommended intervals for changing the coolant, which is typically every 30,000 miles or every two years for BMWs.
In summary, while BMW has its own distinct blue coolant, other car manufacturers use a variety of different coolants, and it is important to use the correct type specified for your particular vehicle to ensure optimal performance and longevity.
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