Fuel Efficiency

Fuel efficiency has become an extremely important topic in today's world because of rising gas prices, the need to cut our carbon footprints, and the need to cut dependence on oil-rich nations. Check out these great articles on fuel efficiency.

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Planning to change your own oil? You're probably wondering what the numbers on the can of motor oil mean. Find out what they mean and what oil is best for your car.

Ever wonder what kind of fuel race cars run on? Find out what kind of gasoline race cars from different motorsports run on.

We are all familiar with gasoline-powered cars, and most people have heard about or seen electric cars. So what exactly is a hybrid car?

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I have heard that both race cars and some motorcycles (like Harley-Davidsons) use a dry sump oil system. What is the advantage of a dry sump?

Adding a chemical called tetraethyl to gasoline can significantly improve the gasoline's octane rating. So what does octane mean?

By Marshall Brain

Gasoline, kerosene, diesel, etc. all come from crude oil, but what makes them different? Read on to learn about their differences.

If you have ever pumped gas that claimed to "oxygenated" -- something that is common in most urban areas in the winter -- then you have used gasoline containing MTBE.