Opticool Antifreeze HD (Green) is a monoethylene glycol based engine coolant concentrate formulated for optimum
performance in heavy duty diesel engine applications but equally suitable for light duty use. It employs established
inhibitor technology and is phosphate and amine free.
The inhibitors in Opticool Antifreeze HD (Green) include organic acids in combination with borate, silicate and nitrite
which are well known for their ability to provide excellent protection in heavy duty applications particularly where
there is potential for cavitation erosion-corrosion to occur.
Opticool Antifreeze HD (Green) uses sophisticated silicate stabilisation technology to eliminate the potential for
formation of silicate gel often observed with inferior products whilst other additives ensure good compatibility with
hard water and prevent the formation of scale that can result from use of hard water.