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Aluminum radiator replaced with cooper brass?

Took truck to shop due to radiator leak. They said it needed a new one. Originally it came with an aluminum radiator. They put a brass cooper radiator. Is this a problem? 2006 KW T2000 Caterpillar C15 Acert.

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I've ran both in the same truck copper cost is 3 times more than the aluminum. I also found aluminum lasted long than the copper and the aluminum dissipated the heat better so it cooled better. Now the reason I change from the aluminum which came in truck and switched to copper was I thought it would cool better and hold up better but I was wrong. I would never put a copper radiator back in unless that was the only replacement choice I had. There's a lot more to this story but this is the short of it.

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Thank You, at the first sign of trouble I'm going back to aluminum. Radiator shop assured me that the cooper is a lot better, that was after it was installed. I assumed that I was getting an aluminum radiator. At this point I'm just concerned about something catastrophic like overheating or corrosion.

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In the first 6 months of the copper radiator they replaced it 3 times the 3rd one lasted a total of 15 months so that's when I went back to aluminum radiator and that's been 3 years ago and no trouble.

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