At Mains Cables R Us, we have used Caig De-Oxit products for many years. The reason for this is simple: they do exactly what they say on the tin, and bring both sonic and visual benefits to equipment and ancillaries when used. I am doing a big deoxit maintence on everything electrical here. I am kind of wondering, does this stuff ever remove actual visible deposits on equipment with just flushing action? Therefore, we have assembled a De-Oxit maintenance kit that will provide years of service and help to keep your hi-fi and AV plugs and connectors in pristine condition. Company policy is that we do not under any circumstances issue instructions to our couriers to leave deliveries unattended when no one is at the delivery location. DeOxIt is indeed the old vintage stereo guys friend. Please stop saying it is a miracle product though.

Okay, so I don’t know what it is but I know what is in some of the greatest corrosion preventative compounds that there are. In the Navy the Corrosion Preventative Compound we use is also lighter fluid, and propellant with a barium corrosion inhibitor. And let me qualify that statement. Right around 1995 or so I got a got a job in Fleet Training in the Naval Aviation Depot as a Corrosion Control Instructor and the Aircraft Painting School. Previously in the Navy I spent a couple of years in the Corrosion Control shop of VA-34.My equipment has never really been maintained with it because frankly I was just too cheap to buy this stuff. It certainly turns into an all day affair when you decide you need to clean EVERYTHING. So I know a thing or two about Corrosion, Corrosion prevention …….. make that a thing or three. I was the up and coming wonder boy in the program as well and once co-authored a paper on Trivalent Chromium aluminum surface treatments with one of the scientists on aircraft aluminum. In high-end audio, it is vital to maintain the integrity of the signal by making the best possible connection between components. By simply removing oxidation and contaminants from cable connectors, sonic performance is significantly improved. What it will not do. IT WILL NOT REMOVE RUST. IT WILL NOT REMOVE OXIDATION, and let me qualify that by saying tightly bonded oxidation. Loose oxidation products……..okay, I’ll buy that. But let me explain by that I mean loosely bonded oxide films that you cannot see or see that they are removed. The NAPTHA CLEANS IT. There is no chemical conversion that I am aware of. I can clean the bird poop off my car with 400 wet and dry too. Doesn't mean it's the right tool for the job.

I also know that to test products we put them in a salt fog booth then take aircraft aluminum’s and scratch X’s into them, then treat the metal then place it in the booth. I can unequivocally state that DeOxIt is NOT AS GOOD as Mil-Spec Corrosion Preventative Compound (Mil-PRF-81309) because I’ve tested it in salt fog booths myself. It just isn’t as good. Over the weekend, my buddy asked me to tag along on a visit to a local tech. This guy was repairing my friend's Crown DC300A. When we arrived he was finishing up a Marshall guitar amp head. The guy fixed the Crown. He replaced 3 or 4 output transistors that had shorted out. There was still a bit of static when turning one of the gain pots. My friend said that he used Deoxit and the static cleared up, only to have it reappear after the tech repaired the amp. So I can’t say for sure DeOxIt has a barium inhibitor in it but I bet it is an inhibitor of some kind. As far as converting oxides on metal you need an acid for that. It can’t be an acid in DeOxit because then it couldn’t be listed as a “Trade Secret” because by law “Trade Secret” stuff can’t be hazardous. Stuff like phenolic acid and chromic acid is hazardous.

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If I've gotten anything from this thread it's that both the CRC stuff and the Deoxit products work well. But I would always clean with something non-residue first, then use deoxit.