Before your Navara leave the factory it was already filled with a high-quality, year-round, and extended life engine coolant that contains solutions which is very effective for anti-corrosion and anti-freeze function thereby no need to add additional cooling system additives for your vehicle.
When adding engine coolant always make sure to use the manufacturer's recommended types to avoid a future problem that may occur on your vehicle caused by using a different type of coolant.
The recommended water-coolant mixture depends on the outside temperatures, for an outside temperature up to -15 °C the water-coolant mixture should be 70/30, 70 percent water, and 30 percent engine coolant, for an outside temperature up to -30°C the water-coolant temperature should be 50/50.
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