Somebody can (and most likely will) correct me if I am wrong, but I am pretty sure that transmission fluid does not have detergents in it. So, therefore I would have to question it's ability to clean anything.

However, I do recall reading here, that it does add lubricity, which should help the injection pump live a happier life.

I think it was Larry Bible, that said he adds a capful of ATF to his tank at fillups. (not sure if that is enough, but if it is, it wouldn't be enough to make a smokescreen)

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It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein


09 Jetta TDI
1985 300D