How did you come to this rate? It is dependent on the restrictions in the head/block vs. radiator. You are saying they are perfectly equal.

Not only that...Heat expansion of the coolant (thereby affecting density) would probably play a role in what portion would flow thru the rad at different stages... But...why would you want to run your Benz without the Tstat? The extra cost in fuel (while reaching operating temp) ought to be prohibitive... no?

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1983 300SD, 1999 200 cdi and 1998 1,6 (gasser)