Until they can provide some actual evidence that a 10 minute "gentle" flush can do anything meaningful to remove sludge and baked on laquer , etc, I think this falls into the same waste of money, snake oil category as all the other similar products out there. The reviews are all meaningless...just off the cuff remarks.
These products have been around for many, many years and I have never seen a single one that can support the claims they make. A possible exception is AutoRx, which is a not a quick 10 minute miracle and has some actual test data and evidence to support it.
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