I should have been clearer. You can not have any street fuel contaminating the race fuel. Fuels is some parts of the country (like where I live in AZ) have chemicals that NHRA does not like. If contaminated, you will be DQ'd. It's a long process to cleanse the syste,. I know, I would drive my car to an NHRA event and flush it out. But then when you get that #1 qualifying position, it's kind of worth it!
