My 1993 300E is leaking transmission fluid from the transmission cooler lines located in the front of the engine. It appears that I have two lines of the same size. Could someone explain to me how to replace the lines? Could I do it myself? My car just had transmission service 3 moinths ago (filter change). Will the transmission fluid be lost when I replace the lines?

How do I check the level of the transmission fluid? Do you check the fluid when the car is on or off?

1993 300E 2.8L with 149K.


Thank you
John