This tip involves breaking the "Open Container Law",, Becareful but,,, it works.
You will need to buy a half pint of Jack Daniel's Whiskey. About an hour before you fill up. Put about 4 tablespoons of Jack Daniel's in the gas tank.
Cap you just ain't right! 
NOW,,,,
You can buy the lowest octane,,,of the cheapest gasoline you can find,,,& your truck or car,, Just Won't Care,, (until the next morning.)
This tip involves breaking the "Open Container Law",, Becareful but,,, it works.
You will need to buy a half pint of Jack Daniel's Whiskey. About an hour before you fill up. Put about 4 tablespoons of Jack Daniel's in the gas tank.
NOW,,,,
You can buy the lowest octane,,,of the cheapest gasoline you can find,,,& your truck or car,, Just Won't Care,, (until the next morning.)