What Are the Types of Manual Transmission Fluid?
2 Answers
Manual transmission fluids come in types such as Dexron, Dexron II, Dexron III, and ATFF. Manual transmission fluid helps keep the gear system clean and lubricates to extend the lifespan of the transmission components. Effects of overfilling manual transmission fluid: 1. Increased internal operating resistance of the transmission, leading to abnormal oil leaks; 2. Agitation of the fluid by rotating components can cause air bubbles; 3. Abnormal oil pressure may lead to air blockages in the control valve's oil drain holes, causing poor drainage; 4. May result in gear shifting shocks. Precautions for changing manual transmission fluid: 1. Choose the appropriate viscosity when changing the fluid to avoid power loss; 2. Do not mix different types of transmission fluids to prevent adverse effects on the vehicle; 3. Avoid using low-quality transmission fluid; 4. Ensure no contaminants are introduced during the fluid change process.
I've been tinkering with a lot of manual transmission oil change issues, and the model selection is quite particular. The most common viscosity grade is SAE 75W-90, which is suitable for most sedans and SUVs. For example, the API GL-4 grade specifically protects synchronizer components and has excellent anti-wear effects. If you drive in cold regions, 75W series oil can prevent freezing and starting difficulties. Some models, like older Japanese cars, may use SAE 80W or 85W oil, which is cheaper but has poorer fluidity. Enthusiasts with modified cars might opt for GL-4 or GL-5 grades to handle high loads, but be aware that GL-5 oil contains corrosive additives and should not be used indiscriminately in regular cars, as it can damage gears. I always remind my friends to check the owner's manual and follow the manufacturer's recommended oil change intervals, usually every five years or 60,000 kilometers, to avoid gear-shifting stiffness and ensure smooth driving. Remember, synthetic oil is durable but expensive, while mineral oil is cost-effective and suitable for low-mileage vehicles.
