Important: Store used engine coolant in the proper manner, such as in a used engine coolant holding tank. Do not pour used engine coolant down a drain. Ethylene glycol antifreeze is a very toxic chemical. Do not dispose of coolant into the sewer system or ground water. This is illegal and ecologically unsound.

You can use various methods and equipment to flush the cooling system. If special equipment is used (such as a back flusher) follow the manufacturer's instructions. However, always remove the thermostat before flushing the system.

Whenever the cooling system needs maintenance or repairs, remove and replace the coolant with new coolant.

Important: Do not recycle coolant on vehicles manufactured with GM Goodwrench DEX-COOL®.