Auto | Fuel Efficiency | Alternative Fuels

Alternative fuels include biodiesel and hydrogen. Alternative fuels are important because they could eventually provide us with a cheaper, cleaner, and more abundant source of fuel. Check out these great alternative fuel articles from HowStuffWorks.


What if I put diesel fuel in an automobile that required unleaded fuel only?

What if I put diesel fuel in an automobile that required unleaded fuel only?

Diesel fuel in an unleaded engine wouldn't work because the diesel fuel won't burn in an unleaded fuel engine. Learn about diesel fuel. See more »

Grassoline: Can we fuel cars with grass?

Grassoline: Can we fuel cars with grass?

Grassoline for fuel is a concept that is under development in the ongoing search for an alternative to oil. Learn about the concept of grassoline. See more »

Could salt water fuel cars?

Could salt water fuel cars?

Salt water fuel could be the next viable alternative to foreign oil. Learn about the ongoing research behind the concept of salt water fuel. See more »

Is ethanol really more eco-friendly than gas?

Is ethanol really more eco-friendly than gas?

Ethanol facts help sort out which is better, ethanol or gas? Learn about ethanol facts, and find out if ethanol is more eco-friendly than gas. See more »

How Clean Diesel Fuel Works

How Clean Diesel Fuel Works

Diesel fuel is losing its dirty image. Find out about clean diesel fuel, otherwise known as ultra-low sulphur diesel (ULSD). See more »

How E85 Ethanol Flex Fuel Works

How E85 Ethanol Flex Fuel Works

Learn what E85 is and why some people believe this alternative fuel has the potential to reduce our nation's dependence on foreign oil. See more »

How Natural-gas Vehicles Work

How Natural-gas Vehicles Work

A natural-gas vehicle, or NGV, is fuel-efficient, environmentally friendly and offers a relatively low cost of ownership. Learn about the basic idea of NGVs and the advantages and benefits of this technology. See more »

How Liquefied Petroleum Gas Works

How Liquefied Petroleum Gas Works

You probably know it as the stuff that fuels a gas grill or a Zippo lighter, but that's just the beginning. People are modifying cars to run on the stuff. Learn all about liquefied petroleum gas. See more »

Alternative Fuel

Alternative Fuel

Check out these articles to learn all about the growing technology of alternative fuel. See more »

How Biodiesel Works

How Biodiesel Works

Biodiesel turns biodegradable fats and oils into an alternative fuel for your car. Learn about biodiesel components, biofuel history and biodiesel pros and cons. See more »