Toyota Cars Automatic Transmission Fluid
What is Automatic Transmission Fluid?
Automatic transmission fluid (ATF) is a specialized type of oil used in automatic transmissions to lubricate and cool the transmission’s internal components. It is also responsible for transferring power from the engine to the transmission.
Why is ATF Important?
ATF is crucial for the proper functioning of an automatic transmission. It provides lubrication to reduce friction between moving parts, prevents wear and tear, and helps to dissipate heat generated by the transmission.
What Types of ATF Does Toyota Use?
Toyota vehicles use two main types of ATF:
- Toyota Type WS (World Standard): This is a low-viscosity ATF used in most Toyota vehicles manufactured after 2006.
- Toyota Type T-IV: This is a higher-viscosity ATF used in older Toyota vehicles manufactured before 2006.
When to Change ATF
ATF should be changed regularly to maintain its effectiveness and prevent transmission problems. Toyota recommends changing the ATF:
- Every 30,000 miles for normal driving conditions.
- More frequently for severe driving conditions, such as frequent towing or driving in mountainous areas.
Signs of Dirty ATF
Some signs that may indicate dirty ATF include:
- Slipping or delayed gear shifts
- Noisy transmission
- Overheating transmission
- Burnt or dark-colored ATF
How to Change ATF
Changing ATF is a relatively simple procedure that can be performed at home with the right tools and materials.
Materials Needed:
- New ATF (check your owner’s manual for the recommended type)
- Drain pan
- Funnel
- Wrench
- Transmission filter (optional)
Steps:
1. Park the vehicle on a level surface and engage the parking brake.
2. Locate the transmission drain plug and place the drain pan underneath.
3. Use a wrench to loosen the drain plug and allow the ATF to drain into the pan.
4. Remove the drain plug and replace the transmission filter (if applicable).
5. Tighten the drain plug to its original torque.
6. Fill the transmission with new ATF using a funnel.
7. Check the ATF level using the transmission dipstick.
8. Start the vehicle and shift through all gears to circulate the new ATF.
9. Recheck the ATF level and add more as needed.
Conclusion
Maintaining the correct level and quality of ATF is essential for the proper functioning and longevity of your Toyota’s automatic transmission. By following the recommended service intervals for ATF changes, you can help prevent transmission problems and keep your vehicle running smoothly.
