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.
All 4 of these bullet points affect the price of a transmission flush, but the average cost for a transmission flush here in Phoenix, should be around $100. For a price on your specific car's transmission flush, you'll have to call your local transmission shop.