Exxon XD-3 Extra 15W-40 is a premium, heavy duty diesel engine oil that provides outstanding protection to modern, high performance engines used in the toughest on and off highway applications. Exxon XD-3 Extra 15W-40 has the versatility built in to meet the demanding requirements of modern, low emission diesel engines, as well as older models operating on low- or high-sulfur fuels. Exxon XD-3 Extra 15W-40 is recommended for use in a wide range of heavy duty applications and operating environments and meets the API SL specification for gasoline engines used in mixed fleets. On-highway light and heavy duty trucking; Off-highway industries including trucking, construction, quarrying, and agriculture; Mixed fleets |