Yes, I thought the same thing. However, when I pulled the small plug the first time, about a quart of fluid came out. With a main plug gone, it was a total of about 3.25 quarts.I believe the small plug is used to set the transmission fluid level. Pull the large plug for draining the fluid. When you refill you add fluid until it flows out of the small plug, when it stops running out of the small plug the fluid level should be correct.