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.
1 AutoMD.com provides general how-to instructions and estimates the project as moderately difficult. 2  The main cost is the quarts of new transmission oil. 3  CostHelper readers report paying $40-$175 for do-it-yourself supplies, with an average of $90. Some experts recommend draining and refilling three times, so the fluid is completely changed. 2  Flushing a transmission with a pressurized machine can cost $125-$300 or more, and may include pushing a special cleaning compound through the system.