Antifreeze Color

Q: Why is the antifreeze in my car orange? I thought antifreeze was supposed to be green.

A: Antifreeze comes in various colors depending on the manufacturer. However, there are basically two types: extended life antifreeze and standard (traditional) antifreeze. Both standard antifreeze (usually green) and extended life antifreeze (commonly orange or red) are ethylene glycol based, their differences exist in the rust inhibitors and additives. Since car manufacturers use different types and colors, always check your owner’s manual for the specific type of antifreeze in your vehicle before adding. When adding antifreeze, make a solution of 50% distilled water to 50% antifreeze. And remember, ethylene glycol based antifreeze is toxic to humans and animals – dispose of it properly.