3rd. test result.

17.3 mpg

So far I am lead to beleive that my MPG has gone up 2 mpg. The cost of putting this in my gas is 5 cents per gal.

I will continue testing. cheers

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Stable:
1973 450sl
1978 red diamond ice vette
1975 steel blue convertable vette
2002 steel blue dakota quad.