How to add Mercedes Benz approved automatic transmission fluid?
How to add Mercedes Benz approved automatic transmission fluid? You want to add the Mercedes Benz Approved Automatic Transmission Fluid 236.14 for use with the 5-Speed 722.6 & 7-Speed 722.9 Transmission. Mercedes part# 001 989 68 03 13 Check the level again. You want to double check the fluid level. If you have to added fluid then you must check the level again. Where is the transmission fill tube in a Mercedes? No screws or bolts. Locate the transmission fill tube. It is located between the firewall and the engine. It is kind of hidden so look carefully. Be careful...