here's something else i just discovered.. the fan is broken off of the center bolt and obviously doesn't do anything, and also that A/C condenser (the unit that looks like a radiator) is rather damaged and some of the damage is behind the fan from the loose fan. This must have happened recently. I saw my engine temps go a few C above operating temp the other day and was wondering. It was during a long uphill climb on highway. It went back down after getting over the hill so i assumed it was normal, but now i'm thinking this lack of fan and bad condition of condenser is the cause.

Here is a pic, and then after this is a pic of my parts-car's fan and radiator setup. It looks a whole lot better, so i'll go ahead and plan to do a swap over.

Any thoughts or suggestions during this stage? My A/C works mechanically but the air is nominal temperatures. I'm assuming i need a "recharge" which i have yet to learn about. But is there anything i should pay attention to when doing this fan and condenser swap over?

One more thing.. there is some sort of line/pipe that is hand taped with electrical tape. There is also a tiny oil leak under my car at this spot. I assume this oil leak is from this pipe. What is this line called? I'd like to go about replacing it soon. Pic is below too.