How much antifreeze do you put in a astra diesel?

The amount of antifreeze needed for a Vauxhall Astra diesel can vary depending on the engine model and the cooling system capacity. Generally, you should mix antifreeze with water in a 50:50 ratio. Check your owner's manual for the specific capacity of your vehicle's cooling system, which typically ranges from 5 to 8 liters. Always ensure the engine is cool before adding any coolant or antifreeze.