CITGO Petroleum Corporation's new CITGARD® 700 Heavy Duty Engine Oil is designed to meet the upcoming API CJ-4 performance category, which offers many advantages for fleet owners with 2007, pre-2007, and off-road equipment. CITGARD 700, when combined with ultra-low sulfur diesel fuel (ULSD), is designed to deliver optimum soot control, protection from higher operating temperatures, and prolonged particulate filter life.