* Accuracy: Checking the fluid level with the engine running will give you a false reading. The fluid will be warmer and more expanded, making it appear higher than it actually is.
* Safety: The transmission and engine components are hot when running, posing a burn risk. Additionally, the transmission dipstick itself could be hot, leading to potential burns.
Here's how to check the transmission fluid correctly:
1. Park the car on a level surface.
2. Ensure the engine is off and has been off for at least 10 minutes. This allows the fluid to cool and settle.
3. Locate the transmission dipstick. It's typically near the back of the engine, towards the passenger side. It may be marked with a "T" or have a gear symbol on its handle.
4. Pull out the dipstick and wipe it clean with a clean cloth or paper towel.
5. Insert the dipstick all the way back in and pull it out again.
6. Check the fluid level. It should be within the "Hot" and "Cold" markings on the dipstick. If it's below the "Cold" mark, add the recommended transmission fluid slowly until it reaches the "Cold" mark.
Important Notes:
* Refer to your owner's manual for the correct type of transmission fluid for your 1988 190e.
* Avoid overfilling the transmission.
* Have your transmission serviced regularly. This includes fluid changes, filter replacements, and inspections.
If you're unsure about anything, it's always best to consult a qualified mechanic.
