Re: Please HELP
1) aluminum beats copper for two reasons: cost and weight. If you can put 2x more fins for a given weight, you get better cooling. But, per unit volume, pure copper beats pure aluminum. There's been a bajillion real-world tests (identical design and even CNC) to prove it.
2) Cars use a lot of antifreeze and require a flush every 12 months to maintain health. Plus, even with this regime, certain designs had difficulty. This is why antifreeze has a lot of buffering agents and (if I recall correctly) a silicate chemical which coated the metal(s) to deposited into a film to prevent galvanic corrosion.
3) Water wetter seemed to help, but it did leave a film on tubing. Do a search on the forums. There was plenty of discussion on water wetter. There may have been other drawbacks but my memory fails.
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