Anything is better than Dexron, which is loaded with additives that aren't necessarily needed for power steering systems, and may even be too hard on the power steering system seals of older cars.

For the price ($8), I'm curious if the MB fluid is synthetic. The bottle doesn't indicate that it is synthetic.

At least on rack steering systems, you have top turn the wheel from lock to lock or you miss the fluid in the dead spots. I'm told this technique is actually covered in schooling for auto mechanics. Pump pressure at idle is more than enough to pump the fluid. That's why I suggest lifting the front wheels off the ground, to keep the pressure managable during this procedure.

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95 E320 Cabriolet, 169K