Wholesome automated transmission fluid (ATF) is usually a vivid, translucent purple shade. Nevertheless, because it ages and degrades, it will possibly darken to a reddish-brown. A leak could current as a reddish stain, typically with a barely candy odor, underneath a car. The colour can vary from a vivid cherry purple to a darkish, nearly black, brown relying on the fluid’s age and situation, in addition to potential contamination from different fluids.
Recognizing the hue of discharged ATF gives worthwhile diagnostic info. It will probably assist pinpoint the supply of a leak and the urgency of repairs. Distinguishing transmission fluid from different car fluids, akin to energy steering or engine oil, is essential for correct troubleshooting and efficient upkeep. Early detection of a leak can forestall important injury to the transmission and keep away from expensive repairs. Traditionally, ATF has been dyed purple to assist in leak identification and differentiate it from different automotive fluids.