How often should the BMW 8AT transmission fluid be changed?
3 Answers
BMW 8AT transmission fluid is generally changed every 80,000 to 100,000 kilometers. Signs that indicate the need for transmission fluid replacement include: vehicle shaking, gear shifting hesitation; transmission overheating warning on the dashboard; car stalling; and unusual noises. Different vehicle models have different replacement cycles. Below are the replacement cycles for transmission fluid: Manual Transmission: Manual transmission fluid is generally recommended to be changed every three years or approximately every 100,000 kilometers. Automatic Transmission: Automatic transmission fluid is generally recommended to be changed every two years or approximately every 40,000 kilometers. Continuously Variable Transmission (CVT): CVT fluid is generally recommended to be changed every two years or approximately every 60,000 kilometers. The methods for changing BMW 8AT transmission fluid are as follows: Loosen the drain screw at the bottom of the transmission to drain the old fluid before refilling. Remove the transmission oil pan directly to drain and refill the fluid: This method is more thorough than the previous one, as it removes impurities from the bottom of the oil pan. Use a circulation machine to change the automatic transmission fluid: Dynamic fluid replacement with an intelligent circulation machine can filter and clean sludge and impurities inside the automatic transmission.
I've been driving a BMW for several years now, and the transmission oil issue is definitely worth discussing. The BMW official manual suggests changing the oil every 80,000 to 100,000 kilometers, but honestly, having driven in different cities with varying road conditions, the impact is significant. Based on my experience, it's better to change it every 60,000 kilometers or so. Oil degradation can lead to rough shifting and increased noise, and repairing the transmission can cost a fortune. That's why I stick to regular maintenance. Now my car runs smoothly without any issues. I recommend not just blindly believing manufacturers' claims about lifetime maintenance-free intervals. Regular changes are the way to go—peace of mind, cost savings, and extending your beloved car's lifespan.
I've worked at an auto repair shop and seen many transmission failure cases. The oil change interval for BMW's 8AT transmission really needs attention. The manufacturer recommends changing it every 80,000-100,000 km, but under extreme driving conditions like frequent highway use or traffic jams, the oil degrades faster and should be changed around 60,000 km. Delaying oil changes can cause internal gear wear and rough shifting, with repairs costing at least several thousand yuan. During regular maintenance, check the oil level and replace it if deteriorated. This simple procedure can avoid major overhauls and keep the car running smoothly.
