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 The average cost for a transmission fluid filter and fluid service is $89 to $159 for most cars and light trucks. 2  At Rayâs Garage in Creston, Ohio, the cost of a transmission flush is $139.99, while a transmission flush and filter change costs $219.99.3  A transmission flush is recommended every 30,000 to 70,000 miles. Midas Hawaii in Honolulu, Hawaii, offers transmission flush services for $144.99, which includes a test drive in addition to transmission fluid change.