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Be Your Own Mechanic
VIDEO: Check out in-depth videos on pistons and 10 ingenious car parts videos.>>
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What's the connection between compression ratio and fuel economy?
Some of the latest gasoline engines to hit the market are super-efficient, thanks to their engineers playing with a little thing called compression ratio.
How Diesel Engines Work
Ever wonder what the difference is between a gasoline engine and a diesel engine? Diesels are more efficient and cheaper to run than gasoline engines. Learn what makes diesel engines different!

