Mobil Devac 1630 is a great choice for use in intercooled, turbo-charged engines, whether in heavy-duty trucking or diesel-powered equipment. A high-performance monograde diesel engine oil, Mobil Delvac 1630 performs well under severe conditions, both on and off the highway. It is highly recommended by ExxonMobil for light- and heavy-duty trucking, plus naturally aspirated and turbo-charged diesel-powered equipment such as that used in mining, agriculture, quarrying and construction. Mobil Delvac 1630 provides outstanding protection against sludge build-up, oil thickening, high-temperature deposits, corrosion and oil degradation. Using Mobil Delvac 1630 helps prevent ring sticking and long-term deposits, as well as controlling formation of acids when using high-sulfur fuels.