If we're talking about an auto-trans, then yes. Find the dipstick that says transmission and use a funnel to add the needed amount. To get a proper measurement of the needed amount you will have to have the car on as level an area as possible. Then when the vehicle is at normal operating temperature and running, pull the dipstick out and check the level. Check with your local autoparts store to find out the proper brand and style of trans fluid and then add as needed.