Dear Car Talk:My 2020 Nissan Versa started leaking under the car right after I had the “transmission fluid exchange” service. The dealership mechanic said it was the vent. He said it di… ...

The fluid exchange machine, which some people choose to call a flush machine, cuts into the transmission cooler line at the radiator. As the car runs, old fluid goes out into the waste tank while ...

General Motors advises against using external transmission fluid exchange or flush machines. There are fewer convertible choices today compared with 2013. A four-cylinder engine can perform like a ...

Use of external machines to replace the fluid may affect the operation or durability of the transmission. Transmission fluid should only be replaced by draining and refilling following procedures ...