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Have you chosen the right way to “rejuvenate” your transmission?
February 26, 2026
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Machine Basics
What Is a Transmission Fluid Changer?
A transmission fluid exchanger, also known as an automatic transmission fluid changer or ATF changer, is a specialized device used to change transmission fluid in automobiles. It works by using pressure to inject new fluid into the transmission while simultaneously removing the old fluid, creating a cyclical replacement process.
This equipment is used because large amounts of old fluid and metal debris can remain inside the torque converter, oil cooler, and valve body oil passages. A proper fluid changer helps push old fluid out from those areas while carrying away contaminants and sludge.
Method Comparison
Gravity Oil Change vs. Circulating Oil Change: What Are the Differences?
| Comparison Item | Gravity Drain Method | Flush Machine Method |
|---|---|---|
| Fluid Replacement Rate | Only 50%-60% | Up to 90% or more |
| Operation Method | Drain plug removal, fluid flows out naturally | Equipment pressurization, dynamic circulation |
| Time Required | Approximately 30 minutes | 1-2 hours |
| Fluid Volume | About 4-6L | About 8-12L, usually 30%-40% more |
| Cost | Lower, approximately 500 yuan | Higher, approximately 2-3 times more expensive |
| Cleaning Effect | Significant old fluid residue; impurities are not fully removed | Thorough cleaning of oil passages, cooler, and torque converter |
| Suitable Vehicles | Low mileage vehicles in good condition | High mileage vehicles or vehicles where optimal maintenance is desired |
Simply put, gravity draining is like emptying a cup: no matter how thoroughly it is poured out, residue remains at the bottom. Flush machine exchange is more like dialysis, using circulation to push out old fluid and return cleaner fluid through the system.
Model Upgrade
ATF802/805 vs ATF702/705: Complete Analysis of Upgrades
AUTOOL has been deeply involved in the maintenance equipment industry for many years. Building on the market recognition of ATF702 and ATF705, AUTOOL launched ATF802 and ATF805 intelligent transmission fluid changers to bring automatic fluid change technology to a higher level.
From Single Pump to Dual Pump
ATF702/705: single pump design means new and old oils share the same pump and piping. Cross-contamination between new and old oil may occur during oil changes, and manual pipe cleaning is required after each service.
ATF802/805: dual pump design means new and old oil pumps operate independently. New and old oil piping are completely separated, eliminating oil mixing, and the built-in self-flushing function supports one-button cleaning.
From Manual Operation to Fully Automatic Intelligent
ATF702: cleaning fluid dosing, circulation flushing, new oil dosing, and used oil recovery all require manual operation or manual control.
ATF705/802/805: fully automatic intelligent operation supports automatic cleaning fluid dosing, one-button automatic circulation flushing, automatic equal volume exchange, and automatic new oil dosing plus used oil recovery. High-precision sensors monitor in real time with an error less than 0.2kg (<0.2kg).
From No Reminder to Smart Reminder
ATF702/705: there is no filter replacement reminder. Filter usage status cannot be monitored, and replacement relies on technician experience or scheduled replacement. Filter clogging may affect oil change results.
ATF802/805: the filter replacement reminder uses built-in operating statistics and automatic alerts when the filter needs replacement. This helps keep filtration results stable and reduces the risk of incomplete oil changes caused by clogged filters.
AUTOOL Transmission Fluid Changer
The AUTOOL transmission fluid changer product line includes models related to ATF702, ATF705, ATF802 and ATF805 workflows, with options for adapters, pressure gauges, testing tools and newer intelligent exchange functions.
FAQ
Frequently Asked Questions from Customers
| Comparison Item | ATF802 | ATF805 |
|---|---|---|
| Screen | 5-inch | 7-inch |
| Pressure Display | Mechanical | Electronic |
| Temperature Display | No | Yes |
| Printer | No | Yes |
| Sight Glasses | Dual sight glasses | Triple sight glasses, including old oil sampling |
| Oil Tank | 20L | 25L |
| Flushing Mode | Circulation flushing | Filter flushing + chemical flushing |
Is a dual oil pump really better than a single oil pump?
Yes. With a single oil pump design, some mixing of new and old oil in the lines is unavoidable. Dual oil pumps keep new and old oil in completely separate circuits, eliminating mixing entirely for purer fluid exchange.
What is the benefit of automatic cleaning fluid filling?
Traditional equipment requires technicians to manually pour cleaning fluid, which is troublesome and prone to spills. ATF802/805 automatically draws cleaning fluid and precisely controls the amount for a clean, efficient operation.
Is the filter replacement reminder important?
Very important. When the filter becomes clogged, filtration efficiency drops and contaminants may re-enter the transmission. The ATF802/805 smart reminder system helps the filter stay at peak performance.
What is the purpose of the triple sight glass design?
The ATF805 triple sight glasses include an old oil sampling window and new/old oil circulation windows. Before the exchange, a small amount of old oil can be shown to the customer. During the process, technicians can compare the color difference between new and old oil, making the result visible and easier to trust.
Is a built-in printer necessary?
For 4S shops and high-end specialized repair centers, a built-in printer is highly useful. Printing exchange reports provides proof of service quality and results, helping improve professional image and reduce potential disputes.
Conclusion
Conclusion
From ATF702/705 to ATF802/805, AUTOOL has completed a comprehensive upgrade from semi-automatic operation to fully automatic intelligent operation. Core features such as dual oil pumps, automatic cleaning, smart reminders, and data printing make transmission fluid exchange simpler, more precise, and more professional.
Every AUTOOL transmission fluid exchanger undergoes rigorous testing to ensure stable quality and worry-free after-sales support. If you have decided which model suits your needs, contact AUTOOL for a quote, product materials, or stock availability.
Need an ATF802 or ATF805 Quote?
Reply with ATF802/ATF805 plus quantity, or ask AUTOOL to compare ATF702, ATF705, ATF802 and ATF805 for your workshop workflow.
- WhatsApp: +86 189 2647 7404
- Email: [email protected]
