All correspondence must be made through the Vendor Portal. Specifications include, but are not limited to: Automotive Fluids, Lubricants, & Additives: NOTE: Specific alternatives need to be addressed in questions submitted on or before April 19th, 2023. IPTC will address (approve/disapprove) specific alternatives in the addendum answering questions by end-of-day April 21st , 2023. This specification describes various grades of lubricants and additives used in the IPTC’s motor equipment fleet, including automobiles, gasoline and diesel-powered trucks, auxiliary engines, and both on and off-road maintenance equipment. Petroleum based lubricants furnished under this specification shall be American Petroleum Institute (API) certified and labeled as such, shall conform in quality to the accepted standards of the Society of Automotive Engineers (SAE) HS-23 and the International Lubricants Standardization and Approval Committee (ILSAC). All Products to be supplied shall be the contractor’s first line, top quality brands and product line. If API and/or motor vehicle manufacturer specifications increase during the contract period, the contractor shall notify the IPTC of such changes. The Contractor shall continue to furnish IPTC with products that meet or exceed the latest API and applicable motor vehicle manufacturer specifications throughout the contact period. All products proposed in this bid must be virgin product. Recycled or repurposed fluids will not be considered at this time.