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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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

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.

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