The rumble sounds great in the driveway, but the real story is complicated.

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Despite what old cartoons would have you believe, it's neither normal nor good for your vehicle to smoke heavily while it's running. Maybe in the old days, but modern cars with modern fuel injection, ...

Diesel-powered vehicles require diesel exhaust fluid to reduce engine emissions, making them less harmful to the environment and safer to drive.

Is it time to replace your old truck or tractor? Is it old enough that its engine has none of the exhaust-emissions equipment that’s been giving people fits in recent years? Have you decided to take ...