Specifications include, but are not limited to: A. API CK-4 Premium Diesel Engine Oil (15w40) formulated to provide outstanding protection to modern, high performance low emission diesel engines in severe and off- highway applications as well as older engines operating on high sulfur content fuels. This product must meet or exceed the most current API CK-4, CI-4, CH-4, CF4, SM AND the latest OEM specifications for Caterpillar, Cummins, Detroit Diesel, Mack, Mercedes, International and Volvo. B. Dexos 5W30 Full Synthetic Blend Engine Oil for use in GM vehicles with gasoline engines that is 2011 or newer. This product must meet or exceed the GM specifications. Dexos1 will replace the GM6094M, GM4718M and GM-LL-A-025 specifications for most GM gasoline engines. C. Diesel Exhaust Fluid (DEF) for on/off road vehicles that must meet or exceed all the OEM specifications to include: ISO22241 standards and API certified. D. Premium Universal Tractor Hydraulic Fluid at minimum needs to meet the following specifications: (Used at Berkeley County Government Landfill at 557 North Highway ONLY)