44 Cooling System Antifreeze General DANGER CAUTION Coolant is toxic; risk of poisoning. DO NOT drink coolant. Use proper hand protection when handling. Keep coolant out of reach of children and animals. Failure to follow these precautions can cause serious illness or death. If the recycled antifreeze or coolant has been passed through a fractional distillation or similar process that has removed all hazardous and contaminating materials, including dissolved solids and acids, will produce a sufficient base antifreeze. Correctly inhibited to meet the standard, it can be regarded as a new coolant which is fully accepted.
CAUTION Never add coolant to a hot or overheated engine this can result in engine damage. Allow the engine to cool first. Antifreeze additives not only protect the cooling system from freezing but also against corrosion and cylinder liner pitting. Antifreeze typically comes in one of two glycol types, ethylene or propylene. Propylene antifreeze is NOT recommended for use in a Volvo engine. There is also regular and extended life antifreeze. If the vehicle is delivered with extended life coolant, there is a label attached to the surge tank. Note: DO NOT mix regular and extended life antifreeze. DO NOT use extended life antifreeze unless it is of a type approved by the engine manufacturer.
Regardless of the type and make, acceptable antifreeze or premixed coolant must meet or exceed the standards ASTM D 5345 and ASTM D 4985, and be formulated for heavy duty diesel engines. W2004463