Have the OBD-I computer scanned for transmission codes, which may not turn on the check engine light; many parts stores scan for free. Locate the leak source, since frequent fluid loss means a significant leak. If the transmission must be removed to repair the leak, also address the second-gear slip. Repair cost depends on the car's condition; a similar rebuild was about $1800.
The owner of a 1994 Ford Tempo must add transmission fluid every 3-7 days and the transmission slips going into second. The problem has worsened over about five months, and the owner asks whether it is only a seal leak, whether it could be more serious, and whether repair is costly. The expert recommends a free parts-store scan because transmission codes on this OBD-I system may not illuminate the check engine light, asks where the fluid is coming from, and notes that a severe leak may require pulling the transmission, at which point the slip should also be repaired. Cost depends on the vehicle's condition; the expert cites an $1800 rebuild on a similar 1994 Ford.
