Automotive Fuel-Saving Scams vs. Real Upgrades
Avoid
Fuel Additives, Magnetic Field Devices, Water-Injection Gadgets — Not Recommended
Ferox fuel additives, "2G fuel savers," magnetic field devices, water-injection gadgets (Aqua Tune-style).
Consistent with the broader, long-documented pattern that "fuel-burns-more-completely" additive claims don't hold up — modern engines already burn fuel at near-complete efficiency by design (emissions regulations require it). The physics claimed for magnetic-field/water-injection devices don't correspond to how internal combustion engines actually work.
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No buy links — flagged, don't buy this.