The colors were especially helpful to DIYers without access to a repair guide or owner's manual, as coolant color was a reliable indicator of the type of antifreeze filling their vehicle. Nowadays, ...
Read more: The 15 Most Reliable SUVs Of All Time, Ranked Inorganic Additive Technology (IAT) coolant is the oldest and most recognizable antifreeze out there. It's bright green in color and is ...