Years ago I saw a artical from TDR that referenced upgrading the cooling system to a later model cross flow radiator. My 90 model cummins with automatic will overheat in the summer towing almost anything up a hill. I want to fix it right when I fix it. Please let me know if you know where or what article this is and where I can get a hold of it at. Also maybe somebody has some better ideas. Thanks. . Ron in Fairbanks
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