Whats the difference between a flush and a transmission service?
First of all, lets take a look at what is done when you perform routine maintenance on an automatic transmission. You start by getting the history on the transmission from the owner and then test drive the car or truck to see how the transmission performs. The next step is to check the transmission for leaks and remove the sump pan, draining 4 to 6 quarts of fluid. This can’t be done with all transmissions since some are designed without a pan. The technician then examines the contents of the pan and filter paying close attention to any unusual material that may have worn off internal parts. The pan is cleaned, filter and gasket replaced and pan is reinstalled. New fluid is added to the full line and the vehicle taken on another test drive to insure its proper operation. There are two significant differences between a transmission service (routine maintenance) and a flush (also called a fluid exchange). The first is during a service, approximately 40-45% (4 to 6 quarts) of the transmis
