Has anyone heard of or tried Ethos F R?If so does it really work?how well?is it worth buying?

Question

it's suppose to help you save gas by adding 2 ounces per 10 gallons.

Answer 1

FOR THE RECORD
There are very few things you can pour into the fuel tank or the crankcase that will REALLY make any substantial difference in your mileage.
Your car is designed at the factory to get the best possible mileage and still remain within the acceptable limits of emissions.
Some cars can be helped with electronic tuners or modification computer chips, but they run in the area of $350.00 to $500.00.
The best thing you can do for fuel mileage is
1) Proper tire inflation
2) Proper maintenance
3) Cruise control WHERE APPROPRIATE
4) Drive like you have an egg between your foot and the throttle pedal.

Answer 2

i have no bloody clue what your talking about