I get asked this question so often that I feel like a broken record telling the pros & cons over and over. I am not a scientist, chemist or engineer but based on my 33 years in the radiator business here is my opinion on which is better; copper or aluminum radiators.
There is much debate over whether a copper or an aluminum radiator will cool better. There are pros and cons to each material. It has been scientifically proven that copper actually transfers heat better than aluminum. It is easier to repair in most cases than aluminum and until the last couple of years was much less expensive. The drawbacks to a copper radiator are the weight difference (aluminum is much lighter) and the solder joints that hold it together.
