What is the refill capacity of transmission fluid in a 1998 Buick Regal?

The refill capacity of Transmission Fluid for a 1998 Buick Regal is approximately 12 quarts when performing a complete transmission fluid change, which includes replacing the filter. However, if you're only topping off the fluid, the amount needed will vary depending on how much fluid is already in the system. Always refer to the owner's manual for the most accurate specifications.