Toyota and Lexus coolant replacement and maintenance After 2004, Toyota and Lexus switched to Super Long Life Coolant. This is pink in color and has a 100,000 mile initial replacement interval, followed by 50,000 miles thereafter. This coolant is premixed with water and doesn’t require dilution. What color coolant???? - Toyota 4Runner Forum - Largest Zerex Asian is pre-diluted to 50/50 and uses p-HOAT technology like the Toyota Super Long Life pink coolant. The red is full-strength and uses benzoates instead of sebacates and is an OAT coolant. (OAT=organic acid technology; HOAT=hybrid organic acid technology). You will need two jugs of Zerex Asian for each jug of Toyota Red. Why Is Coolant Different Colours? | Prestone The colour of engine coolant isn’t there to make it look pretty. There are historical reasons why it comes in different colours, but these days it doesn’t necessarily tell you all that much. However, it’s important to make sure you’re putting the right fluid in your car, so here we give a bit of insight into the differences.