Quote:
Originally Posted by California98Civic
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The formula & procedure:
Caution: do this outside in a well ventilated area and wear gloves and goggles. The acid is not particularly caustic, but you don’t want to get it on stuff unnecessarily. Also, while heating it produces a smell that would not be pleasant inside—and that might indicate something unhealthy.
Formula: Per gallon of water I used 75ml citric acid and 50ml Oxalic acid.
Procedure: I placed the CAT in my cheapo 12 quart pot. Two and a half gallons water nearly reached the brim and completely covered the catalytic converter inside the housing. So I mixed 225ml Citric Acid and 125ml Oxalic Acid with the 2.5 gallons water. Ideal temps for the solution are said to be 150-160* F for six hours. ...
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I am all set up to do this wash in the morning, when I will have six straight hours. Since my car has set the P0420 code and I have to do a Cali SMOG test this month, we might get a pretty good test of how effective this procedure is.
Quoting myself for the procedure and formula details.