Specifications include, but are not limited to: 5W-30 all-weather DEXOS1 approved engine oil. Must be designed to meet the warranty requirements of all major manufactures of gasoline and diesel engines including but not limited to the following specifications: DEXOS1. Products bid must be on DEXOS approved oil list. 15W-40 all-weather diesel engine oil. Must be designed to meet the warranty requirements of all major manufactures of gasoline and diesel engines including but not limited to the following specifications: API CK-4/SN and ILSCA GF-5. This bid item will be bid as both a bulk product and in 55-gallon drums. Bulk product: approximately 100-300 gallons per delivery. Mobil HDEO 15W40; Heat transfer oil ISO 68 or equal. Flash Point: COC 445 Degrees F. Viscosity @ 100 degrees F. SUS 325. Viscosity @ 210 degrees F. SUS 50. Viscosity Index: 95-100. Pour Point 5 degrees F. Carbon Residue 0.02% m/m. Size: 55-gallon drums. AG Heat Transfer 68; All petroleum and coolant products must be from “virgin” base stock. Products may NOT be substituted by re-refined products and such a substitution will not be considered “or equal”. Bidders who wish to offer a re-refined product may submit a separate listing of re-refined products available, but must also include virgin products.