So I am going to get my radiator flow tested on my 2002 excursion as I am chasing a slight overheating issue and I have a new fan clutch , thermostat and water pump....what the heck else is left?!?!?!?

So is there an upgrade available? I was going to just go with a new Napa one if I need it.

As for the transmission cooler lines in the bottom - how much fluid am I losing? Do I need to cap the lines - will they continue to drip or just a bit when I disconnect them?

Thanks
Joe