Lots More InformationRelated HowStuffWorks Articles
- How Gas Prices Work
- How much gasoline does the United States consume in one year?
- Why doesn't gasoline burn cleanly?
- What is the problem with MTBE in gasoline?
- Biodiesel Quiz
How does a gas pump know when you've got a full tank? Read this simple explanation of the mechanics that cause a gas pump to shut off when the tank is full.
You've seen lots of fuel-saving devices advertised on late night TV. But how can you know the gas-saving product you ordered in a sleep-deprived stupor will actually live up to its promises?