Question Intake or outake on my radiator?

Depends where they are located?
Usually like this should be going.
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Should my fan be pulling air in or out on my radiator?
Or are you asking 'push or pull'? That is: should the fan push the air through the radiator or pull it through the radiator.

Assuming you're still following the air-flow pattern above, I don't think push or pull really matters for cooling performance. But some fans may perform more loudly in one configuration vs. the other. Only your experimenting can tell that.