[ccjohnson]

You may have internal clogging in the tubes. If so, a good radiator shop can hot tank it. We had to get ours done. They found some damaged leaking tubes so we opted for a complete re-core of the radiator. It was +/-2700 with a year warranty. If you have a 6V92, Newell may still have 1 or 2 laying around. They didn't have any 8V92 radiators when we got ours done. I think Atlas Radiator in Dallas has drawing for 8V92 radiators if my memory serves me right. I'm fairly sure that is where they got our re-core from.