For 1990-2009 cars

It is not necessary to check the manual transmission fluid level. A transmission fluid leak is the only reason for fluid loss. If a leak occurs, take the vehicle to the dealer/retailer service department and have it repaired as soon as possible. You may also have your fluid level checked by your dealer/retailer when you have your oil changed. See Recommended Fluids and Lubricants for the proper fluid to use.