Do I need to replace the filter when changing transmission fluid with a circulation machine?

[LailaRose]

When changing the transmission fluid in a car, it is not necessary to replace the filter. If the transmission fluid is changed without removing the oil pan, the filter cannot be replaced. In car maintenance projects, changing the transmission fluid is also a very important task. Generally, transmission fluid needs to be replaced every two years or after driving approximately 40,000-60,000 kilometers. However, there is a filter inside the transmission oil tank, and often when the transmission fluid is changed, the transmission fluid filter element is not replaced. Below is a related introduction to car maintenance: 1. Visual inspection: Before driving, check the doors, hood, trunk, and glass condition, inspect the body for damage, whether the body is tilted, and whether there is any oil or water leakage. 2. Engine and various fluids: Check the fixing condition of engine components, inspect the engine for any oil or water leakage at the joints. Check and adjust the tightness of the belt, inspect the fixing condition of various pipelines and wires. Check and replenish engine oil, coolant, and electrolyte. 3. Tires: Check the tire wear and clean the trunk. When approaching the tire wear mark, replace the tire. Check for bulges, abnormal wear, aging cracks, or hard damage on the tires. 4. Cleaning and lubrication: Clean the oil stains on the engine hood, doors, and trunk hinge mechanisms, and lubricate them. The general service life of antifreeze is two years, and it should be replaced during maintenance, with a thorough cleaning of the cooling system. Due to the hygroscopic nature of the braking system, brake fluid should be replaced every two years.

[VanAlice]

When I was using a transmission fluid exchange machine to change my car's transmission fluid, I realized that skipping the filter replacement is a big no-no. The filter is a built-in component inside the transmission that specifically captures metal shavings and contaminants. If you only change the fluid but not the filter, those contaminants remain inside, immediately contaminating the new fluid as soon as it's added. This can lead to transmission overheating or accelerated wear. I once tried to save money by not replacing the filter, only to experience rough gear shifting later. When I took it to the repair shop, they found the filter completely clogged, costing me hundreds more to clean it out. My advice is to always replace the filter with every fluid change—it's not expensive, just 30-50 yuan for a decent brand. Plus, since the exchange machine provides thorough fluid replacement, pairing it with a new filter can significantly extend your transmission's lifespan. Regular maintenance on these small things can save you big money in the long run.

[MacBrynlee]

I asked a mechanic about this, and he said that when using a transmission fluid exchange machine, it's basically necessary to replace the filter as well. The filter acts like a mask, blocking various debris, and over time it gets clogged. If you don't replace it, the new fluid will just get contaminated with those pollutants, potentially causing early transmission problems. I tried just changing the fluid on my old car once, and within a few months, I started hearing a humming noise. Turned out the filter was completely shot. Replacing the filter isn't expensive—just a few dozen bucks for most regular cars—but it can save you from major repair costs. The filter location might be trickier on some models, like my SUV where you have to work from underneath, but don't let that deter you. Remember, it's smart to regularly check your filter's condition.

[DamianDella]

When using a transmission fluid exchange machine, I firmly believe that replacing the filter is a must. The filter is responsible for trapping contaminants and preventing debris from circulating and damaging internal components; changing only the fluid without replacing the filter is a wasted effort, as the new fluid will quickly become contaminated. Compared to manual fluid changes, the exchange machine is more efficient, making filter replacement even more essential. Some older vehicle models allow for filter cleaning, but most modern cars recommend installing a new one. Don’t skip this step—it significantly reduces the risk of transmission failure.

[Briella]

When I first started learning about maintenance, I was also curious whether a transmission fluid exchange machine requires changing the filter. The answer is definitely yes, because the filter is key to preventing dirt from entering the oil passages. If you only change the fluid but not the filter, contaminants remain there to pollute the new oil, potentially shortening the transmission's lifespan. Once, my car developed strange noises, and after repairs, I learned it was caused by not changing the filter. Now I remember to replace the filter every time I change the fluid. Choosing a high-quality one can make it last longer.

[OliviaLynn]

Using a circulation machine to change transmission fluid makes replacing the filter crucial. The filter accumulates metal fragments or sludge, and skipping replacement can lead to contaminated new fluid, causing transmission overheating or component damage. I've disassembled old filters before, often finding black deposits inside. Although it might be omitted under certain vehicle conditions, replacement is always advisable for safety. The process can be challenging, like difficult access in different car models, but don't give up easily. It prevents costly repair issues.