Stop in for a cup of coffee

I have one out of a duramax on mine, it is ziptied to the front of the radiator. Its big enough that it covers half the radiator abouts.
running cooler always helps

So what's the impact on engine temps with that in place?

I should probably upgrade to an aluminum radiator anyhow... with the slant I can't go to a 3 stack core. There's no fan clearance