They claim to have a testimonial from GM with no link.
It is an engine conditioner that is hydrocarbon compatible. It burns completely - there is absolutely no residue left -- regardless of usage with gasoline or diesel fuel.
Although catalytic converters reduce emissions, this is "after" the gasoline or diesel fuel has passed through the engine. Carbon deposits are still left behind, which obstruct both gasoline or diesel engine performance, as well as clogging up gasoline filters, diesel fuel filters, and oil filters.
When the UBiee PowerPill is added directly into the gasoline or diesel fuel tank, carbon deposits disappear from the fuel system and engine, therefore noticeably revitalizing and extending the life of the engine.
http://www.helpwithfuelprices.com/