Why does CVT transmission fluid generally not need to be replaced?
2 Answers
Nissan's advanced CVT transmission can complete the replacement of special oil every 200,000 kilometers. Many private cars may not even reach 200,000 kilometers by the time the vehicle is replaced, so the CVT transmission fluid may not need to be changed. The role of transmission fluid: Transmission fluid is an oil product that keeps the gear system clean, ensuring the normal operation of the transmission and extending the life of the transmission device. Characteristics of transmission fluid: Most transmission fluids can be used in automatic transmissions on the market. In fact, each automatic transmission design has different technical requirements. Even the same model of transmission configured in different vehicle models will have differences in torque, weight, speed, structure, etc. Therefore, the original manufacturer has its own specified dedicated transmission fluid. Different transmission fluids are one of the factors that affect gear shifting quality.
After driving a CVT car for so many years, I've found that the transmission fluid rarely needs changing, mainly due to its unique design. The CVT system has excellent sealing, preventing external contaminants from easily entering, unlike older open-style transmissions. The fluid's formulation uses high-quality synthetic materials, maintaining stable lubrication across various temperatures and delaying aging. In terms of operation, the steel belt and cone pulley generate minimal friction, with no gear impacts, naturally reducing fluid wear. However, this doesn't mean it's completely maintenance-free. Over time, the fluid can oxidize or become contaminated, affecting shift smoothness. Personally, I check the fluid condition every 60,000 kilometers or two years to ensure the transmission's health; neglecting it could lead to costly repairs. Developing a habit of regular maintenance extends your car's lifespan, saving money and providing peace of mind. Remember, the new car manual often contains detailed guidelines—referring to it is the most reliable approach.
