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Okay, one more time, WITH FEELING! What is Opti Guard? Who manufactures the product(DuPont, 3M etc)? What are the technical specs/chemical properties? How long has it been in use? What are the shortcomings/downsides(there are ALWAYS downsides)? At the present and after 35 years of detailing automobiles as a leisure activity but in a competition frame of mind my first reaction is SNAKE OIL! Please, prove me wrong...
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