I am about to transplant a 95 W124 606N/A motor into a 1984 Gwagon. I have replaced/updated the oil cooler system from the pan mounted oil cooler to the filter mounted type from the 210 chassis.
My question is since the new Oil cooler takes up the hole that originally fed the heater core what is the new connection from the block to the heater core?
Can't seem to find that specific hose connection in the EPC. Is it fed from another freeze plug or from the block?

Thanks
Mark

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91 300GD SWB with transplanted 87 OM603 turbo motor