I think dealer gave me wrong auto transmission fluid




ATF 134 FE has MB-approval 236.15 and is backwards compatible with any approved or previous 236.15. The FE is called for the 722.9 7-speed transmission manufactured in 2010 or later (possible exceptions). ATF 134 FE is not mixable with any non-236.15 fluid.
The 722.6 uses ATF 4134 with MB-approval 236.14. This is called for in the 5-speed and some early 7-speeds. Your car uses this stuff.
Take the ATF back, get a refund, and go purchase some Valvoline Max-Life Full Synthetic. You can purchase three gallons(!) for around $80. You say, "But Valvoline doesn't have the MB approval!". Yes, but Dodge Chrysler approves the use of this fluid in their cars. Why does that matter? Because Dodge Chrysler uses the 722.6 NAG1 transmission which is the same as that used in our Mercedes. The. Exact. Same. Transmission.


