That way it will match exactly in color and chemical makeup, leaving nothing to chance and making sure your vehicle’s cooling system will stay working at top efficiency for years to come. Some such situation where this is a good idea is newer Ford vehicles with a gold color antifreeze, or GM vehicles that came with Dex-Cool.
Please keep in mind that the colors we refer to in the article pertain to passenger cars only, there is an entire rainbow of truck coolants out there as well, and the reds, blues, pinks and other colors of truck antifreeze do not interchange with automotive coolants of similar colors.
to color the antifreeze for identification and marketing purposes. The color of antifreeze is no longer an accurate indicator as to whether it is an IAT, OAT, HOAT or NOAT formulation. Further, some antifreeze manufacturers market a “universal” antifreeze they say is compatible with all OAT, HOAT and NOAT formulations.
On GM's own consumer site, the debate regarding its Dexcool antifreeze continues. And in mixing any antifreeze with water for a 50/50 mix, the use of distilled water is highly recommended.
WHAT COLOR IS ANTIFREEZE? Antifreeze colors include red, orange, yellow, pink, blue and green. Different colored antifreeze is used to identify the type of antifreeze being used. Inorganic Acid Technology (IAT) antifreeze is green in color. Organic Acid Technology (OAT) antifreeze is orange, red, green, pink or blue.
Orange/Red color coolant: These are the other side of the coin. Orange coolant is a modern style of anti-freeze that contains organic acids as their corrosion inhibitors, and usually uses ethylene glycol as it’s main anti-freeze component.
The colour of engine coolant isn’t there to make it look pretty. There are historical reasons why it comes in different colours, and different brands use different colours as well, but these days it doesn’t necessarily tell you all that much.
The truth is, color is not a reliable predictor for what type of coolant you have. For example, OAT coolants are usually orange, yellow, red or purple.
Antifreeze Reference Chart By type, color and application ... all colors of antifreeze. For all makes, all models and Ford all colors of antifreeze. For all makes and models of antifreeze. Specially formulated to meet GM specifications after 1995.