Best Transmission Flushes of 2025

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Transmission flushes are an essential maintenance service for any vehicle with an automatic transmission. This process involves draining the old transmission fluid and replacing it with new, clean fluid to ensure that the transmission is operating at its optimal level. Transmission flushes can help prevent costly repairs and extend the life of the transmission. There are many different types of transmission flush products on the market, each with their unique features and benefits. It is important to choose a reputable brand and follow the manufacturer's instructions carefully to ensure the best results.
At a Glance: Our Top Picks
Top 10 Transmission Flushes
Genuine Chrysler Accessories Transmission Cooler Flush
The Genuine Chrysler Accessories Transmission Cooler Flush is specially formulated to dissolve and flush unwanted particles from the transmission cooler system components. It is compatible with transmission cooler system components and provides genuine OEM Chrysler fluid. The flush is also foaming resistant and has a flash point of 38.0 degrees Celsius. This product falls under the category of Transmission Flushes.
Lubegard 95001 Transmission Flush
Lubegard 95001 Transmission Flush is a safe and effective solution to remove varnish deposits and prepare your transmission for new fluid. This product is suitable for both manual and automatic transmissions, and contains rust and corrosion inhibitors without harmful solvents.
Lubegard Automatic Transmission Flush
The Lubegard Transmission Flush is designed to effectively eliminate varnish buildup in your transmission system. This cleaning process prepares your transmission for fresh fluid, ensuring optimal performance. It's safe for both manual and automatic transmissions, giving you peace of mind no matter your vehicle type. Additionally, it includes rust and corrosion inhibitors, which help protect your transmission from damage. By using this product, you can enhance the longevity and efficiency of your transmission, ultimately saving you money on potential repairs.
Lubegard Kooler Kleen Transmission Flush
The Lubegard Transmission Flush is designed for all types of transmissions, whether automatic, CVT, DCT, or manual. It effectively eliminates grease, dirt, sludge, and metal shavings, ensuring your transmission runs smoothly. By preventing pollutants from affecting new or rebuilt transmissions, you can extend their lifespan and improve performance. Additionally, this flush is safe to use as it won't contaminate new transmission fluid, giving you peace of mind. With no harmful CFCs or chlorinated solvents, this product is an environmentally friendly choice for your vehicle maintenance.
Lubegard Transmission Flush ATF 12 Pack
The Lubegard Transmission Flush is designed to effectively eliminate varnish buildup, helping to maintain the performance of your transmission. By preparing your system for new fluid, it ensures smoother operation and extends the lifespan of your transmission. It is safe for both manual and automatic transmissions, offering versatility for different vehicle types. Additionally, this product contains rust and corrosion inhibitors, protecting your transmission from damage. With no harmful solvents included, you can use this flush with peace of mind, knowing it's safe for your vehicle.
Lubegard 98602 Flush and Protect Pack
The Lubegard 98602 Flush and Protect Performance Pack is a transmission flush product that safely removes varnish deposits, prepares the transmission for new fluid, and protects against heat, wear, and oxidation. This product is used by transmission professionals worldwide and is endorsed by automakers.
Niteo Products Motor Medic Transmission Flush
Niteo Motor Medic Flush is an effective solution for maintaining your vehicle’s transmission. You can use it with or without special flush equipment, making it convenient for any situation. This product thoroughly cleans internal components and valves, ensuring that your transmission operates smoothly. It also prepares your automatic transmission for new fluid, which is essential for optimal performance. Plus, it leaves no harmful chemical or alcohol residue, giving you peace of mind while restoring your vehicle's functionality.
Niteo Motor Medic M1410TF Synthetic Automatic Transmission Flush
Niteo Motor Medic M1410TF Synthetic Automatic Transmission Flush prepares your auto-trans for new fluid. Made in the United States, this transmission flush package weighs 0.55 pounds and has a package dimension of 3.81 H x 20.066 L x 8.382 W (centimetres). This product falls under the category of Transmission Flushes.
Lubegard Automatic Transmission Flush
The Lubegard Transmission Flush is designed to effectively clean your transmission system. It safely eliminates varnish buildup, which can hinder performance. By preparing your transmission for new fluid, it helps ensure optimal operation. This product is compatible with both manual and automatic transmissions, offering versatility for different vehicles. Additionally, it contains rust and corrosion inhibitors to protect your transmission from damage. Using this flush can lead to a smoother driving experience and extend the life of your transmission.
Penray 6533 Automatic Transmission Flush
The Penray Transmission Flush is designed to enhance your vehicle's performance by effectively cleaning and revitalizing the transmission system. It helps to minimize friction and wear, which can prolong the life of your transmission. Additionally, it conditions seals and O-Rings, ensuring they remain flexible and functional. If you're dealing with sticky valves, this product can help free them up, allowing for smoother operation. By using this flush, you can maintain your transmission's health and improve overall driving experience.
Frequently Asked Questions (FAQs)
1. Are transmission flushes really necessary?
In general, most vehicles require a transmission fluid change every 30,000 miles and a flush every 2 years. However, the frequency may vary depending on certain conditions. It is important to consider the manufacturer's recommendations and any signs of transmission issues to determine if a flush is necessary.
2. How much does transmission flush cost?
The cost of a transmission fluid flush service can range from $125 to $250. This is typically around twice the cost of a transmission fluid change. The exact cost may vary depending on factors such as the location, the type of vehicle, and the specific service provider.
3. What are the signs that you need a transmission flush?
There are several signs that indicate the need for a transmission flush, including strange noises or grinding sounds from the transmission, problems shifting gears, slippage when shifting gears, unexplained surging of the vehicle, and a delay in movement after placing the vehicle in gear. If you experience any of these signs, it may be time for a transmission flush.
4. Do transmission flushes cause problems?
While a transmission fluid flush can potentially cause problems, such as circulating debris and clogging up parts of the transmission, it is important to note that having a flush performed can also remove contaminants and improve transmission performance. It is recommended to consult with a professional and follow manufacturer guidelines to minimize the risk of problems.
5. Is it better to flush or change transmission fluid?
A transmission flush involves removing all the old fluid and replacing it with new fluid using a flush machine, which can optimize transmission performance. On the other hand, a fluid change is a drain-and-refill process that leaves some old fluid in the transmission, potentially contaminating the new fluid and affecting performance. A flush is generally considered more effective in maintaining a healthy transmission.
6. Does your car run better after a transmission flush?
Yes, after a transmission flush, your car is likely to run better. The flush eliminates dirty fluid and replaces it with clean fluid, which helps lubricate the transmission system and improve overall performance. Smoother and more consistent shifting can also be noticed due to the new fluid's enhanced frictional properties.
7. Will I notice a difference after a transmission flush?
After a transmission flush, you can expect to notice several improvements. The new fluid helps to cleanse the transmission, removing sludge and contaminants that can accumulate over time. This can result in smoother shifting and improved performance. Additionally, the transmission system will benefit from the new fluid's optimal lubrication properties.
8. Does your car drive better after a transmission flush?
Yes, your car is likely to drive better after a transmission flush. Regularly changing the transmission fluid, especially when it becomes dark or contaminated, can improve fuel economy and overall engine performance. The new fluid provides better lubrication and helps ensure smoother operation of the transmission, leading to a better driving experience.
During our transmission flush research, we found 24 transmission flush products and shortlisted 10 quality products. We collected and analyzed 5,905 customer reviews through our big data system to write the transmission flushes list. We found that most customers choose transmission flushes with an average price of $106.64.
The transmission flushes are available for purchase. We have researched hundreds of brands and picked the top brands of transmission flushes, including Chrysler, Lubegard, Niteo Products, Gunk, PENRAY. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.

David Davis has rich experience as a mechanic and a general repairman in the automotive industry. It has given him plenty of knowledge in automobile repair, auto parts, and all kinds of tools. In his spare time, he enjoys assembling and disassembling parts for cars.