For Savory substitute thyme (stroner flavor) or thyme with a little sage or mint.
1 Flushing a transmission with a pressurized machine can cost $125-$300 or more, and may include pushing a special cleaning compound through the system. 2  The power flush process typically replaces all of the transmission fluid, and can require 12-22 or more quarts.
Transmission Flush Cost. So as you know, a transmission flush is an effective service for your car as long as itâs part of routine maintenance. Whereas a fluid change only removes a portion of the old fluid, a transmission flush exchanges all of it for new fluid.