Phillips 66® Aviation and Phillips 66® Lubricants are headed to EAA AirVenture Oshkosh 2026 with show-only specials, technical expertise and fan-favorite traditions for one of aviation’s most anticipated weeks. From July 20–26 at Wittman Regional Airport (KOSH), AirVenture is expected to welcome 700,000 visitors from 94 countries, with more than 800 exhibitors on the grounds and nearly 10,000 aircraft taking to the skies.