Quote:
Originally Posted by EricSilver
If I decide to use 20W50 again, should that be further reduced to, say, 6 qts/litrs?
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No .. Same measure. Benz TSB states that you are looking for the 1/2 way mark on the dip-stick measure when engine coolant is at operating temp.
That is the new measure and there is a change in the manual referring to such after the change.