Capnqball,Sully2; No..... I did this to see if an even greater concentration of bleach would cause damage to an engine. If you are worried about what to do with the diesel, look in the yellow pages for a fuel supplier, and ask them what they thing, and what they would do. I believe that any fuel treatment for diesel, will fix the perceived problem. And YES, I too think that any bleach that gets pumped will end up in the bottom of the separate. If I had done this, I too would have an Oh My God moment. But in reality, as others have said, this is a non problem, I believe.