* Automatic Transmission: Most likely, a 1993 Lumina with an automatic transmission will hold between 10 and 12 quarts. However, it's crucial to check your owner's manual for the *exact* capacity for your specific vehicle. The capacity might vary slightly depending on the exact model and sub-model of your Lumina.
* Manual Transmission: If you have a manual transmission, the capacity will be significantly less, usually around 2-3 quarts depending on the model of your manual gearbox. Again, *consult your owner's manual*.
It's absolutely critical to check your owner's manual for the precise amount. Using too much or too little transmission fluid can damage your transmission. The owner's manual will have the correct information based on the specific model and options of your car.
