Circulating Transmission Fluid Change vs Manual Fluid Change: Which Method is Better?

A detailed comparison of manual and circulating transmission fluid changes. Discover why a dedicated machine circulating fluid change is superior in protecting and extending the life of your transmission.

The Importance of Regular Transmission Oil Changes

Transmissions, especially automatic transmissions (ATs), are among the most complex and expensive components in a car. Transmission fluid (ATF) not only lubricates and reduces friction, but also transmits power, cools and cleans the delicate internal components. Over time, the fluid degrades, becomes contaminated with metal filings and loses its important protective properties.

Therefore, changing the transmission oil periodically is a mandatory requirement to ensure smooth and durable operation of the vehicle and to avoid costly damage. However, there are currently two main methods of changing the oil:manual (bottom discharge) and machine circulationSo, which method is really better for the “heart” of your transmission?

1. Manual Transmission Oil Change (Bottom Drain)

This is the most traditional and popular method in many garages.

Procedure:The technician will remove the drain bolt at the bottom of the gearbox crankcase, let the old oil drain out, then tighten it and add new oil through the oil dipstick.

Advantage:

- Fast, simple.

- Lower labor costs.

Fatal Weakness:

- Cannot replace all old oil:Due to the complex structure of the automatic transmission, especially the torque converter, the bottom discharge method can only remove about -40-60%old oil. The remaining old oil will immediately mix with and contaminate the new oil, significantly reducing the protective effect.

- Residue remains:Metal shavings and dirt deposited in the nooks and crannies of the gearbox cannot be completely removed.

Conclude:Changing your oil manually is like pouring out half a glass of dirty water and adding clean water. The water will become a little clearer, but never completely clean.

2. Change Circulating Gear Oil Using Specialized Machine

This is a modern method, recommended by experts and car manufacturers.

Procedure:The technician will connect a specialized oil change machine to the two oil lines of the gearbox. The machine will perform a closed process: one end pushes new oil in, the other end sucks old oil out with the same pressure as the operating pressure of the gearbox. This process continues until all the old oil is replaced with 100% new oil.

Outstanding advantages:

- Replaces up to 99.9% of oil:Make sure all old oil and dirt are completely removed from all parts (including the torque converter). New oil will maximize lubrication and protection.

- Clean the system:The circulation process helps to flush and push dirt out of the system.

- Safe and accurate:The machine automatically measures and accurately compensates for the amount of oil taken out, avoiding excess or lack of oil.

Disadvantages:

- Requires specialized equipment and skilled technicians.

- The cost is a little higher than manual replacement.

Conclude:Changing the circulating oil ensures your transmission is completely "freshened up", providing smooth shifting, minimal noise and maximum longevity.

The Complete Solution From Gartz: Gartz Circulating Oil Changer

Understanding the importance of proper oil changes, Gartz not only provides high quality gear oils but also brings modern technological solutions -Gartz circulating oil changer.

- Gartz circulating oil changerPossesses superior features:

- Lens Design:Allows both technicians and vehicle owners to directly observe the process of old (black, dirty) oil being pushed out and new (clear, clean) oil being put in, creating absolute transparency and trust.

- Automatic Oil Line Detection:Smart technology automatically detects the input and output of oil pipes, making the connection and operation process quick and accurate, without the need for complicated manual operations.

- Optimal Efficiency:Ensures thorough replacement of old oil, providing the highest protection when combined with Gartz's specialized gearbox oils such as Gartz DCTF & DSG, Gartz CVT, Gartz ATF...

Conclusion: A Worthy Investment For Your Transmission

Clear, Changing the circulating transmission oil is a superior method to changing the oil manually.. Although the initial cost may be a little higher, the long-term benefits are undeniable. It helps you save tens, even hundreds of millions of dong in future gearbox repair costs.

To ensure your transmission is properly cared for, choose reputable garages equipped with specialized circulating oil change machines such asGartz circulating oil changerand use high quality gear oil products. This is the smartest and most worthy investment for your assets.