What coolant do you need for a defender?

For a Land Rover Defender, the recommended coolant is a mixture of water and ethylene glycol-based antifreeze, typically at a 50:50 ratio. It's essential to use a coolant that meets the specifications outlined in the vehicle's owner's manual, often referred to as a long-life coolant or one that is compatible with aluminum engines. Always check for any specific brand recommendations or requirements based on the model year of your Defender.