Difference Between Red and Green Antifreeze? Which One Is The Best?

If you are slightly interested in science, you must have heard about the term antifreeze. If not, don’t worry, this article will provide you with in-depth knowledge about the same.

Antifreeze is a chemical compound used to increase the boiling point and decrease the freezing point of a coolant. Ethylene glycol and propylene glycol are the bases for antifreeze, which is used in a vehicle’s engine.

Difference Between Red and Green Antifreeze

We are here to provide you with detailed information about red and green antifreeze.

Let’s begin!

Red Antifreeze

Red antifreeze is termed as Dexcool. It is said to last much longer than other kinds of antifreeze. Initially, IAT and later OAT or organic acid technology were established, which led to the evolution of several colored antifreeze formulations.

Eventually, the hybrid organic acid technology HOAT, which combined OAT and IAT, came on the market. HOAT technology led to the establishment of red antifreeze. It is more stable and a great boost for the water pump, enhancing its life.

Green Antifreeze

Earlier, every antifreeze was green in color. The green antifreeze has IAT or inorganic acid technology in the production process. Here again, ethylene glycol or propylene glycol is used as the base. The antifreeze is present with water in a 50/50 ratio.

This mixture is termed a coolant, and it is used in an engine’s radiator. The task of the antifreeze is to prohibit the coolant from freezing as it transfers heat to the radiator.

The mixture of green antifreeze has some additional additives like phosphates or silicates.

Head to Head Comparison Table

Red Antifreeze Green Antifreeze
It is termed Dexcool and stays for a longer period. A regular antifreeze.
Developed from hybrid organic acid technology. Developed from inorganic acid technology.
It is a new form of antifreeze. It is the oldest form of antifreeze.
It is more stable. It is less stable.


This article summarises the basic difference between red and green antifreeze and their features.

We hope that the information provided above helped you in the best way possible.

Happy Learning!

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