Use Zerex G 05 (Same,Same as Mercedes Coolant). ONLY Two Choices!

I always fill the system until the level is equal with the seam (Top to Bottom)
of the Tank.
(There is an Extension Tube [metallic] that is above the Level Sensor location
inside the Tank.It's part of the Metal Hard Coolant line entering the Bottom of
the Tank.)

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'84 300SD sold
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