PRODUCT DESCRIPTION HD Coolant HG 40 is a concentrated engine coolant formulated around ethylene glycol, fortified with a corrosion inhibitor package featuring organic acid salts and silicates. This coolant is categorized as a silicated Organic Acid Technology (OAT) product, devoid of nitrites, amines, phosphates, and borates. Prior to use, it must be mixed with high-quality water, with an optimal dilution…