Q&A

Is it better to drain or flush transmission fluid?

Is it better to drain or flush transmission fluid?

Proponents of transmission flushes will often argue that a flush is a better service because it replaces more of your transmission fluid. It’s true that removing your transmission pan or draining your transmission via its drain plug (as your car manufacturer intends) only removes about 70\% of the fluid inside.

Is a transmission drain and fill good?

Transmission flushes are recommended every 45,000 miles or 3 years in place of a drain and fill or to replace fluid changes altogether. In any case, choosing a fluid flush or a drain and refill is better than not performing any kind of maintenance on your transmission.

Is it worth getting a transmission flush?

Many manufacturers recommend a transmission flush every 30,000 miles or 2 years. A transmission flush can extend the life of your transmission. Like all preventative maintenance, the cost and time of this process can save you from expensive transmission repairs down the road.

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Why you should never change transmission fluid?

If you don’t change your transmission fluid frequently, the dirty fluid will not serve as an effective lubricant and it won’t disperse heat well. This will cause wear and tear on the clutches and other parts of your transmission.

How often should you drain and fill transmission fluid?

Manual transmissions generally need transmission fluid changes more frequently than automatic transmissions. The average recommended interval for manual transmissions is around 30,000 to 60,000 miles. For automatic transmissions, the recommended interval is around 60,000 to 100,000 miles.

Is it bad 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.

How often should automatic transmission fluid be changed?

every 30,000 miles
For optimum protection, change the Transmission Fluid and filter every 30,000 miles (unless you have a new vehicle that is filled with Dexron III ATF, which is supposed to be good for 100,000 miles).

Will changing transmission fluid help shifting?

If you catch a shifting issue very early, a transmission fluid flush can sometimes fix shifting issues. The fresh fluid helps clutch discs and steel discs bond and hold without slipping. The seal conditioners in the new fluid help soften the clutch piston lip seals so they seal better.

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How often should you change automatic transmission fluid?

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.

What happens if you don’t change automatic transmission fluid?

Transmission Overheats. Changing your transmission fluid periodically will increase the lifespan of your transmission. On the other hand, if you never change it, you will have dirty and grimy fluid that will fail to lubricate and disperse heat very well.

At what mileage should you not change transmission fluid?

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.

Should I change transmission fluid after 100k miles?

Do You Need to Have the Transmission Fluid Changed? The simple answer is yes. But service intervals for new vehicles can exceed 100,000 miles before this needs to be done. Those who don’t hold on to a new vehicle for very long may never have to have the transmission fluid changed.

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What is the difference between a transmission flush and a pan drop?

Unlike a simple pan drop, a flushing machine removes just about all the old fluid, including the fluid inside the torque converter. Since the procedure uses new fluid to perform the flush, it requires several quarts of new fluid beyond the transmission’s final capacity. Those extra quarts are where most of the added cost lies.

How does a transmission flushing machine work?

A typical flushing machine uses hoses that connect into the transmission cooling lines. It drains the old fluid and holds it inside the machine while replenishing the transmission with new fluid. Unlike a simple pan drop, a flushing machine removes just about all the old fluid, including the fluid inside the torque converter.

How much does it cost to flush a transmission?

Since the procedure uses new fluid to perform the flush, it requires several quarts of new fluid beyond the transmission’s final capacity. Those extra quarts are where most of the added cost lies. A typical transmission flush will cost around $150.

Can you drain transmission fluid without removing the transmission pan?

This allows you to easily and cleanly drain some fluid from the transmission minus the hassle of removing the pan. Again, though, you only get a third to half the fluid out. You can then drive the vehicle for a while, drain the fluid and change it again.