What does Automatic Transmission Fluid (ATF) do?

Automatic Transmission Fluid (ATF) provides the lubrication to the moving parts, wear and corrosion protection and is there to transfer the mechanical power of the automatic transmission. This is why regular servicing of an automatic transmission is vital to change this fluid (and its filter where fitted) in line with manufacturers recommendation. Failure to do this can result in many issues, such as transmission overheat, solenoid failure, jerky gear changes and even total gearbox failure.

What is an Automatic Transmission Fluid Flush?

A transmission fluid flush is a process in which the fluid in an automatic transmission is flushed out of the transmission (gearbox) and replaced with new Automatic Transmission Fluid (AFT). The flushing process, when done correctly, replaces nearly 100% of the old fluid with new fluid, including fluid in the torque converter and oil cooler lines.

Toyota

The Toyota Motor Corporation is a Japanese multinational automotive manufacturer, established in 1937, over 80 years ago.

How popular is Toyota in the United Kingdom?

Toyota was the first manufacturer to produce more than 10million vehicles a year, and it has continued to do so since 2012. There are currently 1.7million on the roads in the UK—a number that has shown consistent growth since their introduction to the UK market.

High-quality motoring—right across the board

Toyota’s current range features luxury saloons, hatchbacks and SUVs, all of which are receiving the steady design upgrade from what were once sensible and steady looking vehicles, into sleeker looking executive sports lines, capable of turning heads at every junction.

Toyota: Market leaders in all-electric and hybrid motoring

Worldwide, Toyota is the market leader in hybrid electric vehicle sales. It’s introduction of the Prius in 1997, the first commercially mass-produced vehicle of its kind, set them on their way as leaders in the field. The UK is no exception, as there are over 80k Prius models on our roads.

There’s more to Toyota than good economy and sensible motoring

As much as the modern market leans towards family SUV motoring and super efficient hybrid fuel economy, don’t be fooled into thinking Toyota is stuck into a single groove.

For those who want more excitement than economy from their driving experience, Toyota makes a selection of cars with much more clout than their sensible city options.

Grab a Toyota GR Supra and you’ll be propelled from 0–62mph in 4.3 seconds using every ounce of its 335bhp. If you want a car that was built for fun and have a spare £52k to lose, then why not put one on your shopping list? As with other Toyota models, it offers great value for the amount of car you’ll be getting.

How often should I have my automatic transmission fluid flushed?

Most manufacturers recommend replacing transmission fluid every 30,000 to 60,000 miles. If you tow anything, or do mostly city driving with more frequent changes of gears, it may be wise to change your ATF even more often.

What happens during an automatic transmission service?

There are many different processes required depending on the manufacturer, some of which may include all the following or just some:

• Mechanics will raise the vehicle and increase the gearbox temperature if required by the procedures.

• The gearbox drain plug will be removed, or a syphon pump inserted down the filler tube.

• If the vehicle has a filter, the sump is likely to be removed so the filter can be accessed.

• The parts will then be cleaned before a new filter is installed and the sump refitted with a new gasket or sealing compound.

• The gearbox will then be refilled with the correct ATF for the gearbox and application in accordance with the manufacturer's procedure.

• In some cases the refilling operation requires diagnostic input as well as manual.

• Once refilled to the correct level and run through its selection routine, the vehicle will be test driven before returning it to the owner.

What are the symptoms of requiring an Automatic Transmission Fluid Flush & replacement?

Usually, there a few signs you can look for:

• Transmission grinding or strange noises

• Problems changing or selecting Gears

• Slipping gears

• Failure to change up or down smoothly

• Jolts or a delay as you change from Park to Drive

• Transmission overheat warnings

• Transmission Control Unit warning lights