Engine Temps

[leversole]

When driving, my temperature never gets above about 160, this is with the shutters closed...

Should I block airflow (with cardboard maybe)in part of the radiator to get a higher temperature, or is this not

critical? I know a gas engine needs to be at its operating temperature to burn off moisture

in the oil, get the carbon burned up, etc, and such...wondering if this applies to diesels.

Thanks