I installed a new radiator because my old one sprung a leak from a fin. Managed to dent the fins significantly on install. I can stick the tip of my finger in the dent. If I attempt to fix that spot could I just end up causing a leak?

 

You'll want something like this to fix the bent fins:


Don't use anything like a screw driver as you can damage the fins worse.

They make metal radiator fin combs that work better/last longer...just an fyi.

 

Leave it. Won't make an ounce of difference other than looks.