In theory Platinum could have a compound(s) added that helps desolve crystallized DEF in the injector and on the leading surface of the DOC, as long as they stayed in the tolerance of UREA required by the standard. If they had something like that, they would be advertising the hell out of "patent #" or "patent pending" as it gives them credibility. With no patent advertising, I have to agree that it is nothing more than a marketing gimmick.