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Here's a video from Denver's CBS 4 about a "car pill" called PBI (BioPerformance Improver) Yahoo!
This video will probably be active for no more than 2 weeks, so in case you miss it:
mpg without the pill: 17.67
mpg with the car pill: 17.65
Tests were performad at Colorado State University. BPI claimed an over 20% improvement in mpg.
it's probably similar to mothballs, which actually temporarily increase your engine's performance and may even increase your mpg, but in the long they cause damage
It is actually partly mothball as per video, but I don't know what else is there.
Note well, if it contains solids insoluble in gasoline, that could could cause problems down the road, no matter how finely they are grounded.
Whether mothball can increase performance or mpg -- I don't know it for sure, for but it can't possible increase mpg enough to make an $25 per bottle of 'pills' worthwhile.
Perhaps inserting a few cow magnets into the fuel tank would align the fuel molecules with the ratio of the tidal ebb, thus using gravitational effects of the lunar planet to enhance the combustible product.
... got that?
If it sounds too good to be true, it probably isn't.
It's not how hard you work, it's how much you get done. Simplificate and add lightness
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