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There is a YouTube channel called Project Farm where this guy tests out all these products and more on a petrol lawnmower motor, opens up the heads and cylinders, does compression tests before and after testing these products so you can make up your mind on what does and does not work. There was also a similar test done on Fifth Gear using a VW Corando to see if it is possible to bring back lost horse power by dyno testing before amd after every step the biggest difference in horse power came after using Red X ( unfortunately you dont get that here ) but overall the theme with most if these products is to see any real results you have to use them regularly for a durationof time and a one time use will not really make much difference.

Definitely photoshopped, as such dunes are at least 20-25 km or more away from Burj Khalifa in a straight line. And above SZR view seems like 5-10km max away because at 20 km away all the fine details vanish and skyline become too small in proportion of displayed sand dune.