Replace Gearbox Oil and Transmission Oil yourself

Changing Gearbox Oil and Transmission Oil yourself–manuals and video tutorials

Helpful guides and tips on replacing Gearbox Oil and Transmission Oil
Make
Model
Car parts category
Changing Gearbox Oil and Transmission Oil: video tutorials

Most viewed video tutorials on the installation of Gearbox Oil and Transmission Oil

  • Manual transmission oil replacement diy - online video
    How to replace transmission oil / gear oil on OPEL ASTRA G CC (F48, F08) [TUTORIAL AUTODOC]
  • Installation Axle gear oil yourself video instruction on VW TRANSPORTER
    How to replace transmission oil / gear oil on VW TRANSPORTER 4 (T4) [TUTORIAL AUTODOC]
  • How and when to replace Gear oil SKODA FABIA Combi (6Y5): video tutorial
    How to replace transmission oil / gear oil on SKODA FABIA 1 (6Y5) [TUTORIAL AUTODOC]
Unfortunately, the manuals you are interested in are not available yet
Please specify the model of your car and fill in the form below, stating which manuals you would like to receive. We'll notify you by email as soon as they're ready. If you're interested in several manuals for different cars, please let us know in your comment.
Vehicle maintenance log book
Know what, when and how to repair, and manage your car expenses
Install the AUTODOC CLUB app!
Your personal car expenses manager, maintenance tips, reminders about upcoming appointments and service intervals, DIY repair instructions – all this on your phone.
Google Play AUTODOC Club App
App Store AUTODOC Club App
Instructions for Gearbox Oil and Transmission Oil change - QR-code scan
Scan

To download the app:

  • - scan the QR code
  • - download from App Store
  • - download from Google Play
DIY Gearbox Oil and Transmission Oil troubleshooting guide
Advices on car maintenance
View more
  • Gear oil replacement and many more - free video tips
    How to get rid of minor scratches on the car | AUTODOC
  • Transmission fluid replacement tricks
    How to clean a throttle body yourself | AUTODOC
  • Gearbox oil Maintenance Hacks
    3 Most Common Reasons for Car Engine Overheating | AUTODOC
  • Manual transmission oil service tips
    How to check the quality and density of your antifreeze | AUTODOC

Repair and replacement manuals

Frequently asked questions about changing transmission oil

What do transmission oil do?

The main function of the oil used in manual gearboxes, transfer cases and differentials is to lubricate the moving parts of these mechanisms. It protects the contacting elements from abrasive wear and scuffing. Thanks to lubrication, the parts slide more smoothly, which contributes to the fuel efficiency of the vehicle. In addition, the oil removes heat and wear products from friction couples, while the oil film formed on the surface of the components prevents corrosion.

Transmission oil serves the same functions in automatic transmissions, and is also used to transmit torque from the engine flywheel to the gearbox shafts.

How do I know when it's time to change the transmission oil?

It is recommended that the gear oil in manual gearboxes be changed on average every 90,000 to 100,000 km. The oil of semi-automatic gearboxes has a shorter lifespan – approximately 50,000 to 60,000 km. If the car is used in harsh conditions, for example off-road, you may need to change it more frequently. In any case, the replacement interval is regulated by the manufacturer and is specified in the owner’s manual. In an automatic transmission, jerking when shifting gears may indicate that the transmission oil has to be replaced.

What happens if I don’t change the transmission oil?

Over time, the transmission oil oxidizes, which adversely affects its lubricating and anti-corrosion properties. In addition, it becomes contaminated with metal chips that act as an abradant and accelerate the wear of parts. Frequent wheelspin can cause carbon deposits to accumulate in it. All this leads to rapid wear of the transmission elements, reduces the fuel efficiency of the vehicle and the ease of gear shifting.

What is the colour of transmission oil?

New transmission oil is often red, yellow or orange. But during operation it may become dark red or brown. Darkening of the transmission oil does not always indicate its poor condition. If it is clear, without a distinctive smell of burning, and has no visible contaminants and impurities, it still can be used. And vice versa, a turbid dark oil with a strong smell of burning and visible mechanical impurities means that the oil should be replaced immediately, as well as indicates malfunctions in the gearbox.

What are the symptoms of low transmission oil?

Jerks in gear shifting, a smell of burning, gear slipping (slipping of transmission friction elements), foreign sounds, as well as delayed or spontaneous gear shifting can indicate the low level of transmission oil in automatic transmissions. In rear-wheel-drive vehicles, when driving uphill or accelerating, air may get inside the oil lines. As a result, oil pressure reduces, the connection with the engine breaks, and the vehicle slows down. The insufficient oil level may even cause the motor to stall. In some cases the engine continues its operation, however the car is not moving.

Low oil level in manual gearboxes results in cracks, jerks and vibrations during gear shifting.

Check the oil level to make sure the problem is caused by the low transmission oil. Cars with automatic transmissions are usually equipped with a dipstick for this purpose. On some vehicles you’ll have to unscrew a filler plug in the transmission oil pan. The filler plug in cars with manual gearboxes can be mounted behind the front left wheel. See your car owner's manual for more detailed instructions on checking the oil level in your car.

Is it difficult to replace transmission oil?

Yes, this procedure is rather laborious and in most cases requires the use of special equipment. In addition, the gearbox should be flushed before adding fresh transmission oil in order to remove carbon deposits, residues, and wear products of contacting elements. Special additives are used for this.

The duration of this procedure depends on the type of oil change: it can be partial or full. The former implies draining of only some amount of oil. The work takes about 1 hour and does not require special devices. However, the partial change is less efficient. Full oil change requires special equipment and takes about 3 hours.