Similar to motor oil for your engine, your transmission needs fluid to keep its transmission components cool and lubricated. You should always have clean transmission fluid to make seamless gear changes. When you have a transmission fluid leak, or your transmission fluid levels dip too low for other reasons, you may notice one or more of the troubling signs below:  Burning Smells - You run the risk of overheating whenever your vehicle runs with not enough transmission fluid. As a result, you will smell burning odors. Continuing to ignore this smell will lead to further transmission damages. Clunking Noises - You may also hear unsettling noises whenever you make gear changes. Trouble Shifting Gears - Speaking of gears, you may not be able to get your automobile into proper gear at all. In other words, your car may refuse to go into drive or reverse. Furthermore, it's very common for a troubled transmission to slip out of gear and go back into neutral in the middle of driving ... read more