[TheIVJackal]

Are there any sort of gains to be had from sticking a shield in front of the radiator? Im talking about literally just sticking a piece of plastic or something similar to block air from cooling down the water in the radiator. Reason I ask is because as I was researching this, I came across a comment someone made about the fact that the block really didn't do anything because there isn't really any water running through the radiator, the Thermostat is closed. Does the block really decrease the time for the car to get to proper operating temperature? If so, why? Thanks.
- Aaron