Are you sure your nose is calibrated that well? If you are willing to throw that kind of money around then you might throw some first at Blackston Labs for a test to just how much gas is really in there. If your nose works that well then you might put them out of business. Up to 1% gas is OK AFAIK.

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra