Castrol Dextron Tranny Fluid For 500E?

[placo1]

Stopped by the dealership this morning to pick up some transmission fluid for my 92 500E and they handed me a bottle of Castrol Dexron. I just wanted to make sure this is the correct fluid to use before I mix it with my existing fluid changed about a year ago. I'm just topping off with this fluid.

On a seperate note, I'm considering changing to Schaeffers Transmission Fluid and was wondering how many have tried it and had better results with it. It's not a synthetic so it should be safe, but is it better than the Castrol or am I wasting my money?


Any other tranny oils worth considering?


Thanks for your input everyone.