Today I got the new rad. They're usually not open at saturdays but since he didn't get it for me yesterday as he promised he got it for me today. He was in a hurry so I had to get to the store within 10 min if I wanted the rad before monday. It's a 15 min walk so I went all in in my freeroll, lost the money I ran and got there in time. Since he was in a hurry, we just exchanged radiators and then I left. The new rad is about twice as heavy as the old one so I assumed it was made out of copper.
When I got home and started to examin the rad I got suspicious. There's some small scratches on some of the fins and under the black paint it seemed to be some alu colored material. I looked down in one of the holes and all the channels seemed to be made out of the same grey/silver material. I suspect that the new rad is another aluminum rad! The thicker frame and the slightly thicker rad might explain the incresed weight.
Scratch showing alu?
Could there be another explaination?
How can I verify that the rad is made out of copper and not alu? Besides scratching and judging from the color?
The rad is marked with "AKG - A 03/86". Maybe there is some site where I could enter these nubmers and find out more about it? Maybe radiator dealers can search in some database and find out more about it? I'm planing to show the rad to another radiator dealer on monday and ask him about it.
