Pure glycol or a mix of glycol and water has a much lower freezing point than that of pure water. By implication, glycol-based chillers are better suited to low-temp environments. Conversely, water has a better ability to retain and conduct heat from an associated process than a glycol mixture can.

111.11°C c.c.

2.433 J/g

Freezing Point of Ethylene Glycol based Water Solutions

-12.9 C

BOILING & FREEZING POINTS Pure water, as you may know, has a boiling point of 212°F (100°C) and a freezing point of 32°F (0°C). However, when you create a 50/50 mixture using water and ethylene glycol, the boiling point rises to 223°F (106°C) and the freezing point lowers to -35°F (-37°C).

Why Use Both? You may be wondering why both water and antifreeze are needed. While water is the best fluid for cooling, it can cause corrosion. Antifreeze has a lower freezing point and a higher boiling point than water so it helps protect your engine in extreme weather conditions.

As temperature of an engine exceeds 230 degrees Fahrenheit, the engine is overheated. Above 245 degrees Fahrenheit, damage may occur. As heat continues to increase, the different rates of thermal expansion cause metal to distort.

Coolant expands as it heats and contracts when it cools. The extra space prevents damage to your engine and hoses. In worst case scenarios, overfilling your antifreeze tank can lead to electrical damage if overflow comes into contact with engine wiring.

3 is that water must be mixed with the antifreeze-coolant in order to keep the performance additives (silicates, phosphates and nitrates) suspended. Without water, these important additives tend to settle. If they do that, you lose anti-corrosion and other additive protection.

Mixing different engine coolants or using the wrong coolant can impair the performance of the special additive packages; this can result in increased corrosion to the radiator. Using the wrong engine coolant can gradually lead to corrosion and damage to the water pump, radiator, radiator hoses and cylinder gasket.

The truth is, color is not a reliable predictor for what type of coolant you have. For example, OAT coolants are usually orange, yellow, red or purple. Then the older IAT coolant is green. Coolants that manufacturers sell can confuse matters even more, like Honda’s blue coolant.

As far as the coolant, you won’t do any damage. But it is recommended you use OEM BMW Coolant only, because it is an organic coolant, compared to the synthetic stuff out there. BMW claims if you use another coolant, it can cause corrosion and damage in the radiator, but I don’t see any merit behind that.

Part of this also includes making sure that you have enough antifreeze in your car. The last thing you want is for your engine to overheat. These days you can actually get yellow antifreeze, blue antifreeze, pink antifreeze and more. The fact is, mixing these liquids is not safe.

“Older coolants that used Inorganic Additive Technology (IAT) were usually blue or green in colour. Similarly, if you buy a second-hand car, the colour of the coolant gives you no idea as to when it needs to be changed. “For example, say you buy a second-hand car and it has pink coolant in it.

green

The Colors of Coolant

parkman [OP] Well-Known Member. Does GM still currently use Dexcool in NEW vehicles.

Absolutely yes. But don’t mix up two different types of coolant as it may lead to some damaging effects.

If you combine them and stir they will mix together. It won’t be safe for your car but you could still mix them.

G12+ is purple. It’s new and it can be mixed in to pink coolant systems, it replaces G12 according to VW.

You can mix two different colors of the same kind of coolant without any problem whatsoever. But if you mix a significant amount of one type in with the other type, you’re weakening your corrosion inhibitors (it happened to my brother, and look at the condition he’s in now).

This is a mistake and can lead to expensive repairs. The two coolants should never be mixed together as they do not react well. When mixed together they can form a thick, jelly-like substance that can completely stop all coolant flow which can lead to overheating. The water pump may overheat and stop working.

Yes. You cannot just keep adding coolant without ever flushing and changing it. Most cars need a flush and complete fluid change every 5 to 7 years.

You should never mix coolant fluid with regular tap water. Tap water contains minerals that can form deposits inside the radiator and cooling system passages of your engine. This and the proper mixture of coolant and distilled water will help your car and its cooling system run without breaking for a long time.