Transmission fluid keeps your transmission running smoothly by lubricating gears, managing heat, and enabling power transfer from the engine to the wheels. Different transmissions—automatic, manual, continuously variable—require different fluid types, and using the wrong one can damage internal components or cause shifting problems. This category covers what transmission fluid does, how to identify which type your vehicle needs, and how to check and maintain it properly.
The articles here answer practical questions: What's the difference between ATF, manual transmission oil, and CVT fluid? How often should you check your transmission fluid level, and what does the color tell you? When does transmission fluid need changing, and what happens if you ignore it? You'll learn how to read your owner's manual for specifications, recognize signs of fluid breakdown, and understand why transmission maintenance matters for your vehicle's longevity.