So, yesterday I noticed that while stopped at a red light my temp. guage was creeping towards the red zone. I Assume my fan wasn't coming on, after gaining some speed the temp came down as I was getting more air flow. Every light after that the temp stayed in the middle, so when I came back to the garage and opened the hood I noticed that there was some evidence of dried antifreeze because I'd seen some speckled dots of white powder on the hoses and on my aluminum water pump pulley. I then checked underneath the radiator and saw a slight drop of antifreeze hit the pavement. So, the radiator core is leaking somewhere and the fan is probably blowing antifreeze everywhere. I probably should of had it pressure tested when I had it out of the car but too late now.
So, now I'm looking into buying a brand new radiator, rather buy new then used in this case. Probably in month or so because I might not be able to put it in until then and need to save up some cash.

I noticed a few vendors that sell new aluminum radiators, is there any real advantage over them other then lighter weight then just buying a new stock brass radiator?
BTW, my car does have an automatic trans but the PO had put a rad from a manual car in and seperate transmission oil cooler in front. I'll probably buy a manual radiator version but depending on price might go for the automatic radiator version as don't really like having the seperate trans oil cooler in front blocking the air flow.
Interested in your opinions! Thanks.