1984 300D Diesel Purge

Hi all at Mersedessource and Happy Holidays to you. I just received the diesel purge you sent me just in time for Christmas and I am dying to try it. I only have one question. Kent's instructions are very explicit but being retired from the training and education field people sometimes interpret differently no matter how precise the instructions. That said, my question is this. It appears that I will be feeding and returning the cleaner from the same bottle. Following this procedure, won't the dirty product coming out of the return hose (cigar) be reintroduced into the clean product thus tainting it and sending dirty product back through the feed? Does this matter? Although more cumbersome would it not be better to feed the cleaner from one bottle and return the dirty fluid to another seperate bottle? Anyway I can't wait to try it.
Thanks for all your help.
Mike G.

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