What Type of Transmission Fluid is Best for Cars?
2 Answers
Car transmission fluid types depend on the transmission: manual transmissions require gear oil, while automatic transmissions use transmission fluid. Here is some relevant information about transmission fluid: Functions of transmission fluid: Change the transmission ratio to expand the range of torque and speed variations of the driving wheels. Adapt to frequently changing driving conditions, allowing the engine to operate under favorable circumstances. With the engine's rotation direction unchanged, enable the car to reverse. Utilize interrupted power transmission to facilitate gear shifting or power output. Methods for proper maintenance of automatic transmissions: Check the automatic transmission fluid by testing its viscosity between your fingers; replace it if discolored or with a burnt smell. Adjust the linkage or cable connecting the gear selector lever to the manual valve, ensuring the manual handle's position corresponds to the spring clip position inside the automatic transmission.
The key to choosing transmission oil lies in your transmission type and the vehicle manufacturer's recommendations. From my experience, automatic transmissions typically require ATF oil, with specifications like Dexron or Mercon series; manual transmissions use gear oil, such as GL-4 or GL-5 grades; CVT transmissions have specialized oil, like Toyota's Type WS. Don't choose blindly—check your car's user manual for the specified model to be safe. Using the wrong oil can have serious consequences, like transmission slippage or premature wear, so changing the oil properly can save a lot of hassle. Additionally, adjust the oil viscosity according to seasonal changes—thinner in winter, thicker in summer—to avoid rough shifting. Regular replacement is also important, usually every 60,000 to 100,000 kilometers—don't delay. Consulting a professional shop is advisable; matching the right type can extend your transmission's lifespan and ensure smoother, more stable driving.
