Your best anti-freeze options

When the temperature drops as quickly as it has, we can be reminded promptly how important it is to maintain the anti-freeze levels in our radiator. Around 60 percent of engine failures can be attributed to cooling system problems, so make sure you are using the correct coolant to prevent your system from failing.

Traditional anti-freeze: This type uses silicate and phosphate to provide protection for aluminum and bare iron surfaces. They most commonly are green or pink and need to be changed every two years or 30,000 miles.

OAT (Organic Acid Technology) anti-freeze: This contains organic acids such as 2-EHA and sebacate rather than silicates or phosphates. They are usually dyed orange or red, but can also be yellow or pink. They must be changed once every five years or 150,000 miles.

HOAT (Hybrid OAT) anti-freeze: This uses both organic and traditional ingredients, including silicates but excluding 2-EHA. A HOAT coolant will likely be pink or yellow and will need to be changed every five years or 150,000 miles.

To learn which anti-freeze is best for your vehicle, consult your owner's manual or automotive professional.