Originally Posted by
MNebiker
Actually, the "new guy w 5 posts" was correct, just missed slightly in his terminology.
Liquid dish soaps - like you use in the sink - have no abrasive content.
However, powdered DISHWASHER detergents do use abrasives to assist in the cleaning process. This is why it is not recommended that fine crystal and dishware that have metallic decorations be washed in the machines as it will etch the glass and in many cases remove the metallic trim. Many manufacturers of fine cutlery also state that the abrasives can harm the fine edges on knives. Cheap glassware will gradually get a cloudy look from repeated washings with these products. (But - There are many bio and enzyme based dishwasher detergents that do not use abrasives.)
Regarding scratching the chain . . . . .?
I have heard of people using the dishwasher to clean baseball caps, but using the dishwasher as a degreaser tool - well, every man has to determine his own level of bravery.
While you're correct does your post have anything at all to do w/ this thread? Could you not help yourself and just had to post something?
ETA: The OP specifically asked about 'Dawn' dish soap...they only make liquid soaps. And cleaning brake rotors in the dishwasher works quite well.