I have an 87 260e and i believe i need to add more tranny fluid, however i'm not sure where the tranny fluid goes. Could someone help me?

 

According to what engine you have the tranny tube is probably on the passenger side. If there is a tube and no dispstick, like my 99 C280, then you will need to again go to a dealer have have them check it. I don't know if you have a electrical control tranny as I have or vacaumm and fluid. What makes you think the tranny needs fluid?