caridImage: caridThe Lincoln Navigator is an SUV made by Ford. The Navigator Owner's Manual advises owners to regularly check coolant levels and maintain proper coolant levels to avoid engine damage. The Navigator's coolant should be kept at a ratio of 50 percent coolant and 50 percent distilled water. The ratio must not fall below 40 percent coolant. Lincoln Navigator Coolant Type | It Still Runs Was this helpful? How to add engine coolant | Vehicle Features | Official Open the hood and locate the engine coolant reservoir. It is often a translucent white color, and has hose(s) connecting it to the radiator. The reservoir has a fill range marked on the side. If your engine is cold, the coolant level should be up to the cold fill line. Lincoln Navigator OE Engine Coolant - autozone Order Lincoln Navigator OE Engine Coolant online today. Free Same Day Store Pickup. Check out free battery charging and engine diagnostic testing while you are in store.