Would you know the failure type for those three Terry? With the exception of the nozzle fillets the pressure boundary welding was good on mine. The structural welds on mine were noticeably worse. The forming process for the core header is at fault in my case.
Unfortunately, all I know about the other one is that it leaked.
Fortunately, I have a low mile original radiator in storage that likely just needs a boil out and pressure test. The reason I didn’t do that instead of the cooling sky one is because I live in a very rural area and there are no radiator shop for at least 100 miles. In the “throw away radiator” era there just isn’t much demand in an area with relatively low population.
I have another one that came out of a 26,000 mile parts truck installed in my current project. I would have thought it was 100% but after driving it about 60 miles it has a very mild leak, I believe at the driver side upper mounting bracket. It’s not even a drip, it’s just wet from that bracket down to the bottom of that tank. The other one is going to get tested so I don’t have to do the job twice. If I can’t find a radiator shop to do it I will rig up my own pressure test. I’m thinking compressed air and either a spray bottle with water and dish soap or submerging it in a tub of water.
It’s a bummer the cooling sky one is so questionable as it cools extremely well. The D1 it’s installed in never reaches 190 degrees even when working hard. I will run with it until it fails and have the refreshed original one ready to go.