How gallons of antifreeze in radiator?

The amount of antifreeze in a radiator typically ranges from 1 to 3 gallons, depending on the make and model of the vehicle. Most radiators hold about 1.5 to 2.5 gallons of coolant, which is usually a mixture of antifreeze and water. It's important to consult the vehicle's owner manual for the specific capacity and recommended coolant mixture.