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Does it matter what automatic transmission fluid you use?

As the owner of Kevin's Autos, I often encounter questions from car owners about the importance of using the correct automatic transmission fluid (ATF). Many drivers may not realize that the type of fluid used in their vehicle's transmission can significantly impact performance, longevity, and overall vehicle health. In this article, we will explore why choosing the right ATF is crucial and how it can affect your vehicle.


Understanding Automatic Transmission Fluid


Automatic transmission fluid is a specialized lubricant designed to keep the transmission system functioning smoothly. It serves several essential purposes, including:



  • Lubrication: ATF reduces friction between moving parts, preventing wear and tear.

  • Cooling: It helps dissipate heat generated during operation, which is vital for maintaining optimal transmission temperature.

  • Hydraulic Function: ATF transmits power within the transmission, enabling smooth gear shifts.

  • Cleaning: It contains detergents that help keep the transmission clean by preventing sludge and varnish buildup.


Why the Right ATF Matters


Using the correct type of ATF is essential for several reasons:



  • Manufacturer Specifications: Each vehicle manufacturer specifies a particular type of ATF that meets the unique requirements of their transmission systems. Using the wrong fluid can lead to poor performance and potential damage.

  • Compatibility: Different ATFs have varying chemical compositions. Using an incompatible fluid can cause issues such as slipping, overheating, or even complete transmission failure.

  • Warranty Considerations: Using the recommended ATF is often a requirement to maintain your vehicle's warranty. Failure to comply can void coverage for transmission-related repairs.

  • Performance and Efficiency: The right ATF can enhance your vehicle's performance, ensuring smoother shifts and better fuel efficiency.


Choosing the Right ATF


When selecting automatic transmission fluid, consider the following tips:



  • Consult Your Owner's Manual: Always refer to your vehicle's owner's manual for the manufacturer's recommended ATF specifications.

  • Look for Quality Brands: Opt for reputable brands that meet or exceed the specifications outlined by your vehicle manufacturer.

  • Consider Synthetic Options: Synthetic ATFs often provide better performance and protection compared to conventional fluids, especially in extreme temperatures.


Conclusion


In conclusion, the type of automatic transmission fluid you use is not just a minor

Frequently Asked Questions

Are all automatic transmission fluids the same?


Automatic transmission fluids will have different viscosities, friction coefficients and additives that will impact which types of vehicles they should be used in. The makeup of the transmission fluid protects the transmission and enables improvement in fuel economy.



Is it OK to mix transmission fluids?


Using the wrong type of transmission fluid for high-tech vehicles can result in irreversible damage. One should never mix regular manual or automatic transmission fluid with CVT fluid or vice versa. While an advanced car can run with the wrong transmission fluid, it will end in damage.



Can I use any ATF in my car?


No, it's not harmful. You can use any brand fluid or oil in your car as long as what's on the label says the fluid meets the requirements of your car. For example if your Chrysler product uses ATF+4 transmission fluid you can use any brand that meets that specification.



Is it OK to change automatic transmission fluid?


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.



Is it bad to mix automatic transmission fluid?


One should never mix regular manual or automatic transmission fluid with CVT fluid or vice versa. While an advanced car can run with the wrong transmission fluid, it will end in damage. The worst is that the user might not even notice anything has gone wrong until the issues have already progressed.



What happens if you use the wrong automatic transmission fluid?


  • Assuming you mean an automatic transmission, you will either have slip and wear, lack of performance, or abrupt grip, uncomfortable ride, and shock damage to the parts.
  • If you put ATF in a CVT, you will destroy it in a few miles from the slippage of the belt on the pulleys.



How often should transmission fluid be changed?


every 30,000 to 60,000 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.



Are ATF and Dexron the same?


DEXRON is the trade name for a group of technical specifications for automatic transmission fluid (ATF) created by General Motors (GM). The name was first registered as a trademark and later evolved into a brand of GM.



Does it really matter what transmission fluid you use?


The most common types are Dexron/Mercon and Multi-Vehicle Synthetic. The transmission is one of the most complex systems in a vehicle, so it is critical to use an appropriate and high-quality ATF to help ensure performance well past the 100k mile mark.



How do I know what automatic transmission fluid I need?


You can find the recommended transmission fluid type for your vehicle in your Owner's Manual or you can refer to Ford's Chemicals and Lubricants website.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.