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What kind of transmission fluid does a 2002 Buick Regal use?

A 2002 Buick Regal's transmission fluid depends entirely on what type of transmission it has. Buicks of that year used both automatic and manual transmissions. There's no single answer.

To know for sure, you need to:

1. Check your owner's manual: This is the most reliable source. It will specify the exact type of fluid recommended for your specific Regal's transmission.

2. Look at the transmission itself: The transmission type (e.g., 4T65E, etc. for automatics) might be stamped on a tag on the transmission case. You can then search online for the correct fluid for that specific transmission.

3. Check your car's VIN: A mechanic or parts store can use the VIN to determine the exact specifications of your car, including the transmission type.

Without knowing your transmission type, any fluid recommendation is a guess and could damage your transmission. Use the methods above to find the correct information.