Many types of coolant contain highly toxic ingredients. For example, ethylene glycol is highly poisonous to humans. For this reason, it’s vital that you dispose of old coolant responsibly: - Ensure the engine is cool - Drain the fluid by unscrewing the sealing screw beneath the engine coolant tank - Direct the old fluid into a large plastic bottle or bucket using tubing and a funnel - When all the fluid has been expelled, remove the tubing and seal the bottle - Sterilize the funnel and tubing you used thoroughly - Never pour the old fluid down a drain, skin or toilet - Label the bottle with its contents (ie. ‘Used coolant’) and mark it as ‘dangerous’ - Contact your local government office, or a knowledgeable garage to find a safe disposal or recycling facility