Automatic transmissions (especially CVTs) are the most delicate mechanical assembly in modern cars. Delayed fluid changes are the #1 cause of catastrophic gearbox failures in Bangladesh.

CVT Fluid Degradation Under Heat

Continuously Variable Transmissions rely on special high-friction CVT fluid to prevent steel belt slippage against the pulleys. In hot climates, transmission oil oxidizes quickly, losing its hydraulic pressure and shear stability.

Recommended Change Intervals

Never wait for 80,000 km. In Bangladesh driving conditions, transmission fluid should be replaced every 25,000 to 30,000 km along with cleaning the pan magnets and replacing the internal fluid strainer.