Why do people say not to change transmission fluid?

Automatic transmissions can slip from low fluid, wrong fluid, internal failure and more. On manual transmissions, they will slip as clutches become worn. Not all unmaintained transmissions will start to slip after having the fluid changed, however it's common enough that many mechanics warn against doing it.
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Is it ever bad to change transmission fluid?

quicker explanation: Changing fluid will NOT damage your transmission, but it could reveal damage that was already present.
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What's the truth about changing transmission fluid?

Though changing transmission fluid can't fix mechanical problems, it does make for smoother shifts and can extend the life of your transmission. And even when manufacturers recommend fluid change intervals of 150,000 miles under normal conditions, it may be a good idea to change it more frequently.
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Is it safe to change transmission fluid on high mileage?

Changing the transmission fluid on a high-mileage car is risky. Don't do it unless your transmission is running fine and the fluid is first-rate, because it can make transmission failure imminent.
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Is it better to flush or change transmission fluid?

With a flush, all the old fluid is removed by a flush machine and replaced with new fluid, allowing for optimal transmission performance. A fluid change is a drain-and-refill, with some old fluid remains in the transmission after the change, which can contaminate the new fluid — and diminish performance.
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Can Changing your Transmission Fluid Cause Damage?

What is the downside of transmission flush?

The flushing procedure may cause some fluid to move in the opposite direction of normal flow due to eddy currents, which may increase the risk of dislodging debris and causing it to settle somewhere it shouldn't.
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How many years does transmission fluid last?

Automatic: Every 60,000 to 100,000 miles

If you drive manual, most manufacturers will recommend changing your transmission fluid every 30,000 to 60,000 miles. If you have automatic, you can typically boost that range up to 60,000 to 100,000 miles. There's no harm in changing your fluid early.
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Is it bad to change transmission fluid after 200k miles?

Yes, you can change the transmission fluid after 200,000 miles. In fact, changing the transmission fluid at regular intervals is an important part of maintaining the health and longevity of your vehicle's transmission.
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What does changing transmission fluid improve?

Transmission oil change eliminates the old blackish oil having lots of debris. Old transmission oil would clog the gears, resulting in a problem in gear shifting. Clean transmission oil makes gear shifting seamless and convenient. You can increase and decrease speed by shifting gears without any hassles.
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Will changing the transmission fluid help slipping?

You might expect that the first step in fixing a slipping transmission is changing or flushing the fluid, but that's not always the case. A fluid and filter refresh can help in some cases, but not always—read on. If the transmission is slipping, it likely means it already has worn internal components.
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How much does it cost for transmission fluid change?

Transmission Fluid Change Cost

While it always depends on the vehicle, most transmission services are between $100.00 to $300.00. Generally, most of this cost isn't always in the labor, but in the price of the fluid if you have a vehicle that takes a very specific fluid, or a lot of it.
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What are the signs that you need a transmission flush?

Other than the obvious check engine light, if you experience harsh shifting, poor acceleration, slipping gears, or transmission whine, then you should think about having your transmission fluid changed or maybe even flushed.
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What mileage is too late to change transmission fluid?

The manufacturer's maintenance schedule for many automatic transmissions doesn't call for fresh fluid until 100,000 miles or, with some Ford transmissions, even 150,000 miles. A lot of mechanics say that is too long and that it should be done at least every 50,000 miles.
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What is considered high mileage for transmission fluid?

How often should I change my transmission fluid? We recommend at least every 50,000 miles for normal use.
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How many miles do automatic transmission fluid last?

Since fluids break down over time, it's important to change your transmission fluid every 30,000 to 60,000 miles. Reviewing your car's manual or researching manufacturer recommendations can help you ensure you change your transmission fluid at the right time.
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Does synthetic transmission fluid last longer?

Although it doesn't need to be changed as often as your motor oil, you should keep an eye on it and make a habit of checking it (or having it checked) regularly. Transmission fluid can last anywhere from 30,000 miles to as much as 100,000 miles — with synthetic fluid lasting the longest.
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Do car manufacturers recommend transmission flush?

Many auto manufacturers suggest having an automatic transmission flushed once every 30,000 to 100,000 miles. For a manual transmission, it usually ranges from 30,000 to 60,000 miles. It's worth noting that some manufacturers don't recommend a flush at all, at least for certain models.
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Should I change my transmission fluid at 70k miles?

Most automotive experts will say that transmission fluid should be changed somewhere between 60,000 and 100,000 miles. However, if your vehicle comes with a manual transmission, it may need to be replaced sooner, around the 30,000-mile mark.
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Why is it so expensive to change transmission fluid?

Specialized equipment: Changing the transmission fluid requires specialized equipment, such as a lift or jack stands, a drain pan, and a fluid pump. This equipment can be expensive to purchase and maintain, which can drive up the cost of the service.
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What color should transmission fluid be?

This can vary, but in most cases, your transmission fluid color should be red. That means if you notice red fluid leaking from your car, it may be a sign of your transmission needing service.
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What does it mean when transmission fluid is black?

Nearly black or black transmission fluid means the fluid is old, very dirty, contaminated, and if paired with a burnt toast smell, has oxidized. At this point, your transmission is telling you something is wrong. If your transmission is showing signs of slipping or hesitation, repair or replacement may be in order.
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What does a slipping transmission feel like?

Typically with transmission slipping, it may feel as if your gears are changing for no logical reason. Your engine may start to create a whining sound or pitch when it occurs. Alternatively, it may feel like you haven't got enough power to drive at the desired speed.
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Can a slipping transmission be saved?

In manual transmissions, slippage is frequently caused by a worn-out clutch. Replace the clutch, and often the problem goes away. For automatic transmissions, damaged or worn clutch plates, transmission bands, or solenoid packs are often the culprit and one or more of these need to be replaced.
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Should I sell my car if the transmission is slipping?

If you're in possession of a seriously damaged or junk car, it's easy to assume the vehicle is unsellable. However, in most cases, this is far from the truth. No matter what repairs your car needs, it's likely that it's still sellable — so, don't give up.
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