Check Transmission Fluid: Car Running or Not Running?
Introduction
Transmission fluid is a vital component of your car’s transmission system. It lubricates the moving parts, helps to cool the transmission, and protects it from wear and tear. If the transmission fluid level is low or contaminated, it can cause serious problems, including transmission failure.
Checking the transmission fluid level is a relatively simple task that you can do yourself. However, it’s important to know whether to check the fluid with the car running or not running.
Checking Transmission Fluid with the Car Running
In most cases, it is best to check the transmission fluid with the car running. This is because the fluid level can change when the transmission is in gear. To check the fluid level with the car running:
- Park the car on a level surface.
- Shift the transmission into neutral.
- Allow the engine to idle for a few minutes.
- Pull out the transmission fluid dipstick.
- Wipe the dipstick clean with a rag.
- Reinsert the dipstick into the transmission.
- Pull out the dipstick again and check the fluid level.
The fluid level should be between the “full” and “add” marks on the dipstick. If the fluid level is low, you can add more fluid through the dipstick tube.
Checking Transmission Fluid with the Car Not Running
In some cases, it may be necessary to check the transmission fluid with the car not running. This is typically the case if the car is in park or if the transmission is slipping.
To check the fluid level with the car not running:
- Park the car on a level surface.
- Shift the transmission into park.
- Turn off the engine.
- Wait a few minutes for the fluid to settle.
- Pull out the transmission fluid dipstick.
- Wipe the dipstick clean with a rag.
- Reinsert the dipstick into the transmission.
- Pull out the dipstick again and check the fluid level.
The fluid level should be between the “full” and “add” marks on the dipstick. If the fluid level is low, you can add more fluid through the dipstick tube.
Frequency of Transmission Fluid Checks
How often you should check the transmission fluid level depends on your car’s make and model. However, most manufacturers recommend checking the fluid level every 30,000 miles or so.
If you notice any signs of transmission problems, such as slipping gears or difficulty shifting, you should check the transmission fluid level as soon as possible.
Conclusion
Checking the transmission fluid level is a simple task that can help you avoid costly transmission problems. By following the steps outlined above, you can check the fluid level with either the car running or not running.
