Hello everybody,
i'm currently planning to change ATF fluid on my Mercedes 300E 1989. I called couple dealers in my area for a price quote, pretty much all of them told me it will be around 300$: about $150 for labor and $150 for parts. The good thing that they do install customer provided parts. I bought a MANN filter with gasket for only 14$ and now i want to buy the fluid. As i know it's gotta be Dexron III, but than i was in a store i got really confused with the selection of different Dexron III ATF by Mobil (such as: extended performance, regular, gold, silver and etc.) Can you please explain me or tell what would be the best choice to go with?

thank you in advance,
andrei