'Green' antifreeze doesn't mean what it used to. The color identifiers are used by multiple products. There's a deep Green for Honda and some other Japanese cars using organoic acid technology (OAT). Those at least are obvious by reading the label.
These days many 'Green' coolants use Hybrid Organic Acid Technology (HOAT) for corrosion resistance. If it says Universal, its probably a HOAT, with 2 EHA and carboxylates.
2 EHA is best used on completely closed system (no air can get in).
Conventional Green uses inorganic corrosion inhibitors.
The phosphates quickly recoat aluminum, such as in the water pump, and solder, critical in traditional copper radiators and heaters.
Silicates are also used in conventional coolant, and often molybdate and sometimes specific copper corrosion inhibitors.
Old World Industries sells it as Peak Conventional. However around here, the chain store brands are the easiest way to obtain conventional antifreeze. (such as Autozone)
These days many 'Green' coolants use Hybrid Organic Acid Technology (HOAT) for corrosion resistance. If it says Universal, its probably a HOAT, with 2 EHA and carboxylates.
2 EHA is best used on completely closed system (no air can get in).
Conventional Green uses inorganic corrosion inhibitors.
The phosphates quickly recoat aluminum, such as in the water pump, and solder, critical in traditional copper radiators and heaters.
Silicates are also used in conventional coolant, and often molybdate and sometimes specific copper corrosion inhibitors.
Old World Industries sells it as Peak Conventional. However around here, the chain store brands are the easiest way to obtain conventional antifreeze. (such as Autozone)
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