Alternative Fuelsrndisplace 'pure' Diesel

摘要

Twenty-two years ago in southern Brazil, a fleet manager was telling reporters what he thought of alcohol he was testing as a fuel for his diesel engines. In response to a question about the concept of alternative fuels, the manager declared without hesitation, "The best fuel for a diesel is diesel, and the best alternative fuel for a diesel is diesel." That's still largely true, except oil prices have made "pure" or "straight" diesel painful to burn. And what is becoming the mainstream product - ultra-low sulfur diesel (ULSF) - is getting panned for its slightly lower tank mileage and loss of lubricity that higher sulfur levels once provided. By federal mandate, ULSD had to be available since autumn of 2006 to fuel EPA 2007-powered trucks. It's becoming more common at fueling stations across the country, and anyone running an EPA '07 diesel should use it or risk damaging the exhaust system's aftertreatment devices.