Flushing the Transmission on an Old Car

Introduction

A transmission flush is a service that removes the old transmission fluid and replaces it with new fluid. This service is typically recommended every 30,000 to 60,000 miles, or as specified in your vehicle’s owner’s manual.

Flushing the transmission can help to improve the performance of your transmission and extend its lifespan. It can also help to prevent costly repairs down the road.

Materials Needed

• New transmission fluid
• Transmission filter (if applicable)
• Transmission pan gasket (if applicable)
• Funnel
• Drain pan
• Wrench

Safety Precautions

Before you begin, it is important to take the following safety precautions:

• Park your car on a level surface and engage the parking brake.
• Allow the engine to cool down completely.
• Wear gloves and eye protection.

Step-by-Step Instructions

1. Locate the Transmission Pan

The transmission pan is typically located at the bottom of the transmission. It is usually held in place by several bolts.

2. Drain the Transmission Fluid

Place the drain pan under the transmission pan. Loosen the bolts that hold the transmission pan in place and allow the transmission fluid to drain out.

3. Remove the Transmission Pan

Once the transmission fluid has drained out, remove the bolts that hold the transmission pan in place and remove the pan.

4. Replace the Transmission Filter (if applicable)

If your transmission has a filter, it should be replaced at this time. The filter is typically located in the transmission pan.

5. Clean the Transmission Pan

Use a rag to clean the transmission pan. Be sure to remove all of the old transmission fluid and debris.

6. Replace the Transmission Pan Gasket (if applicable)

If your transmission pan has a gasket, it should be replaced at this time. The gasket is typically located between the transmission pan and the transmission.

7. Reinstall the Transmission Pan

Place the transmission pan back on the transmission and tighten the bolts that hold it in place.

8. Add New Transmission Fluid

Use a funnel to add new transmission fluid to the transmission. The amount of fluid required will vary depending on your vehicle. Refer to your vehicle’s owner’s manual for the correct amount of fluid.

9. Check the Transmission Fluid Level

Start the engine and allow it to idle for a few minutes. Then, check the transmission fluid level. The fluid level should be between the “full” and “add” marks on the dipstick.

10. Test Drive the Vehicle

Once you have checked the transmission fluid level, test drive the vehicle to make sure that everything is working properly.

Tips

• If you are not comfortable performing this service yourself, you can take your vehicle to a mechanic.
• It is important to use the correct type of transmission fluid for your vehicle. Refer to your vehicle’s owner’s manual for the correct type of fluid.
• Flushing the transmission is a relatively simple service that can help to improve the performance of your transmission and extend its lifespan.

Conclusion

Flushing the transmission on an old car is a simple service that can help to improve the performance of your transmission and extend its lifespan. By following these instructions, you can safely and easily flush the transmission on your old car.