Aluminum pipes & Cooling hoses
I faced this very problem when I replaced my cooling hoses. The aluminum pipes would corrode under all the rubber hose connections, causing me to epoxy repair the holes in my aluminum pipes before replacing with new hoses.
Be sure to check UNDER all rubber hose connections for hidden corrosion. Or you'll be like the squirrel (post 1767) repairing many holes once your cooling system is under pressure. :tantrum: (This might be you pounding your garage floor if you don't check)