
The transmission fluid in a Highlander should be changed every 60,000 to 80,000 kilometers. The main functions of transmission fluid are: 1. Reduce gear wear; 2. Keep the shifting system clean; 3. Extend the lifespan of the transmission system; 4. Prevent the transmission fluid from thinning and losing its lubricating properties. The Highlander is a mid-size SUV under GAC Toyota. Taking the 2021 Highlander Two-Wheel Drive Elite Edition as an example, its body dimensions are: length 4890 mm, width 1925 mm, height 1720 mm, with a wheelbase of 2790 mm. The 2021 Highlander Two-Wheel Drive Elite Edition is equipped with a 2.0L turbocharged engine, with a maximum power of 162 kW, maximum power achieved at 5200 to 6600 rpm, and a maximum torque of 350 Nm.

Regarding the timing for Highlander transmission fluid replacement, I usually emphasize during maintenance that it should be based on the owner's manual, with a general recommendation of every 40,000 to 60,000 kilometers or every 2 to 3 years. Most Highlander models use automatic transmissions, where the fluid thickens as it ages, affecting shift smoothness and potentially causing wear or overheating issues. In daily use, conditions like frequent city stop-and-go traffic or towing increase fluid stress, warranting earlier inspection and replacement. I typically advise owners to have technicians check the fluid quality during each maintenance service – if it appears black or has a burnt smell, it's time for a change. While extending the replacement interval may save money short-term, long-term neglect could lead to costly transmission overhauls; spending a few hundred on fluid changes beats thousands in repairs. The Highlander is an excellent family vehicle, and regular maintenance ensures longevity and reliability – never underestimate this critical detail.

When it comes to changing the transmission fluid for your Highlander, I believe it largely depends on your driving habits. If you drive gently, mostly in the city or cruising on the highway, then changing it every 50,000 kilometers or 3 years should suffice. However, if you frequently go off-road or tow heavy loads, you should shorten the interval to 30,000 kilometers or 2 years. Transmission fluid is like blood—when it gets old, it increases friction between components, leading to more jerky gear shifts and reduced power when accelerating. I always pay attention to this during regular vehicle maintenance—spending a little now can prevent big problems later. Also, don’t forget to check the fluid level; too low or too much can affect performance. The Highlander is quite durable, but don’t take fluid issues lightly—safety first. Regularly changing the fluid can also save fuel and improve efficiency. In short, just sync it with your other maintenance routines.

For Highlander transmission fluid replacement, based on my experience, it's sufficient to change it every 40,000 to 60,000 kilometers. Refer to the owner's manual for the standard interval, and if you drive frequently, check the fluid color for clarity in advance. Don't cut corners when changing the fluid; it's best to have it done at a professional shop.


