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I have a 76 f250 4x4 c6 that we use on the ranch with a feeder on it. It does a lot of slow driving/idling dumping feed bunks during winter and driving through pastures in summer. I have a pinhole leak in my radiator. I can’t take this one off to get fixed as it can’t be down that long and it might not be worth fixing anyway.
I found some aluminum radiators on Amazon for not too much. But I don’t know if I want to go to aluminum.
The Champion are a pretty solid choice for not too much money. I don't particularly like the radiator caps they include with the radiator they seem real cheap. Aluminum radiators are said by some shops to need a separate bonding wire or strap to a good solid ground to prevent damage. Not sure why exactly but I'll take their word for it.
X3 on the Champion radiator. Do a search on this forum and you'll have all the info you need. As far as grounding, I can confirm at least for those of us in the drier climates that the lack of grounding the radiator to the frame can result in electrolysis. I had countless tiny holes in my nearly new Griffin. When I took it in to try to get it fixed they pressurized it in a large tank of water and called me over to have a look, hundreds of tiny bubbles throughout the entire core. Electrostatic discharge due to the very dry air passing over/through it. They also said using rubber isolators to mount the radiator contributes greatly toward this effect. So I would ground it if you can just as a precaution.