How to put antifreeze in car?

Fill your coolant overflow bottle to the "Cold" fill line. If you have a radiator with a cap, leave the cap off for now. Start the engine and allow it to idle up to operating temperature, about halfway up the gauge, or when the thermostat opens and the upper radiator hose gets hot. read more

Rather than open the cap on the radiator, just check to see whether the liquid reaches the “Full” line on the side of the coolant reservoir shown here. It’s part of the coolant recovery system. If the liquid doesn’t reach the “Full” line, open the bottle and add a 50/50 mix of water and coolant until it does. read more