auto-rx may well be another mouse milk auto chemical scam. It does no harm and likely no good either but it makes the purchaser of such a product feel good because he/she has done something rather than nothing to do good for their car. Likely doing nothing will suffice rather than buy one of these products. The market is flooded with this kind of stuff; has been for many years.
The ad copy covers it all; people are good at and are paid, of course, to write this stuff. I will not call it garbage, don’t want to upset anyone.