The other day, after changing the oil on my 20-year-old car, I noticed a tiny amount of coolant escaping through a nearly-invisible crack in the top of the radiator. My first thought was "that's a big part. It's going to be expensive." But then I looked it up, and it's only $55 on rockauto.
And I got excited. I've never had the chance to replace a radiator before! I've done all sorts of other stuff on cars, but never a radiator! Woohoo!
...is there something wrong with me?