Hello,

I have a 1967 mercedes 230 6cyl (W110 fintail), and am wondering how to fill/burp the coolant system. I've read several posting for newer years and not sure if these apply.

I've never quite seen a system like this before, there is no fill cap on the radiator. The system if you can imagine goes like this

Coolant overflow tank contains
-> Small puke valve from radiator
-> Drain hose that goes to bottom of engine

Radiator contains
-> Upper radiator hose directly connected to a weird thermostat housing which in turn is directly connected to the water pump and engine block
-> Puke valve to radiator.

Basically I can't see how the radiator is filled fully w/o having a fill cap. Do I fill the coolant tank, turn on the engine and the coolant will flow into the radiator?