Back in 2004, several automakers got together to create a more pure form of gasoline to meet strict standards set by the U.S. Environmental Protection Agency (EPA), now known as Top Tier gasoline.

Rust and corrosion in the fuel tank are issues that all enthusiasts will face at some point with a project car, whether you're fixing the neglect from a previous owner or dealing with your own car ...

My 1965 Mustang has been sitting in a field since 1984 and I am worried about varnish buildup in the tank before I fire the engine. I drained the fuel and it smells OK, but I am worried about varnish ...