Do you need to mix concentrate coolant? Antifreeze is often available pre-diluted. But if you obtain concentrated antifreeze, always dilute it with water before adding it to a cooling system. Adding the right amount of water provides the needed protection against both freezing and boiling over. What happens if you don't mix concentrate coolant? A lack of additive suspension Mixing water with your antifreeze coolant keeps additives such as nitrates, phosphates and silicates suspended. Otherwise, they will settle inside the system, which could cause you to lose the protection against corrosion that these additives provide. Should I use premix or...

Why does my car make this weird noise? Your car makes a loud, abnormal sound: A hole in the muffler is probably the cause. Replace it immediately. You hear whining or humming sounds on curves: Your wheel bearings may be wearing. Your tires make a weird, rhythmic sound as you drive: Check inflation, tire wear, and wheel balancing. Why does my car make a weird noise when I start the car? In turn, feathered tires could be a symptom of a worn suspension component, causing tires to hop up and down as you drive rather than rolling smoothly down the...