Coolant blue specifically intended to cool the battery. This coolant is a low conductivity type and is specially made as a battery cooler.
Low conductivity in question is this liquid will not conduct electric current.
If there is a problem with the battery and the cooling system, such as a leak, the battery will not short circuit.
Electric short circuit can be minimized with this special low conductivity coolant. This low conductivity coolant will keep the battery temperature no more than 35 degrees.
A stable battery temperature makes the overall performance of the car constant and produces maximum power. By keeping the battery temperature constant, the battery life can last longer.
According to Hyundai’s regular service manual, this low conductivity coolant is replaced every 60,000 km.