Wholesome automated transmission fluid (ATF) sometimes seems vivid purple. This vibrant colour signifies contemporary fluid with optimum lubricating and cooling properties. Because the fluid ages and degrades, it could possibly darken, turning brown and even black. A burnt odor typically accompanies this colour change, signifying extreme degradation and potential transmission injury. Fluid that seems milky or cloudy might counsel contamination with coolant or water.
Sustaining the right fluid colour is important for correct transmission operate. Clear, vivid purple ATF ensures easy shifting, prevents overheating, and extends the transmission’s lifespan. Ignoring discoloration can result in pricey repairs or full transmission failure. Repeatedly checking the fluid’s colour and situation, as outlined within the automobile’s proprietor’s handbook, represents a easy but essential preventative upkeep step.