Mercedes had originally claimed that the trannys didn't need service since they used fluid that was synthetic. However, It's apparant that their views have changed.
My mechanic, whom I trust wholeheartedly, reccommmended MOBIL 1
ATF Synthetic Fluid. He said it is an equal quality with the Mercedes product for better than half price (His suspicion is that Mobil 1 IS the Mercedes fluid but I don't know this).
Many posts in this forum (search them and see) have used the Mobil 1 and have had no problems. Dexron III is NOT synthetic so do not use it!
If you wish to order Mobil 1 ATF synthetic, call 1-888-484-9560. The fluid is $6.49 a quart. I have seen it mentioned that it takes 7-9 quarts to change (you can't get it all out). Good Luck!
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