Philips Diamond Class 66 (ISO VG 68) Turbine Oil

The Department of the Interior Bureau of Reclamation seeks 25 drums of Philips Diamond Class 66 (ISO VG 68) turbine oil, with proposals due September 10, 2026 at 12:00 PM Mountain Time. This is a 100 percent Women-Owned Small Business set-aside. An amendment issued September 3, 2026 extended the closing date and answered vendor questions; offerors must acknowledge receipt of the amendment prior to submission or risk rejection.

Delivery is to Chandler Power Plant, 47415 W Old Inland Empire Highway, Benton City, Washington, with a 30-day post-award delivery window. The oil must meet defined technical specifications including viscosity of 61.2–74.8 centistokes at 40°C, viscosity index minimum 94, pour point of −6°C maximum, flash point 180°C minimum, foaming characteristics sequence 1 of 50 mL maximum, oxidation stability 2000 hours minimum, and 175 kilopascals drop of 175 minutes minimum. Vendors must provide manufacturer's documentation or specification sheets demonstrating conformance.

Quotes are submitted via email to brendan_koop@ios.doi.gov and must include a completed price schedule with unit and total line-item pricing. Award goes to the responsible offeror whose conforming quote is most advantageous based on price and technical factors. The NAICS code is 324191, Petroleum Lubricating Oil and Grease Manufacturing, with a size standard of 900 employees. Payment is made electronically through the Invoice Processing Platform in accordance with the Prompt Payment Act, with standard FAR 52.212-4 commercial product terms and incorporated security prohibitions and exclusions clauses.