The dipstick isn't as easy as the oil dipstick to remove? Mine is a little tougher (longer) to remove but not by much.

I brought my own ATF (Mobil 1 Synth) to my mechanic and he took the old fluid out of both (Torq. Conv incl.) put some cheap ATF inside the trans.. drove it around and drained it all out again and put mine in.

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2008 BMW 335i Coupe