New Engine Oil Designed Not To Smell Could Hide Toxic Fumes From Crew, Union Warns

Recent industry data and discussions at conferences are focusing on concerning fume incidents within aircraft cabins. These events have spurred calls for investigations into engine oil formulations used in commercial aviation. Specifically, certain oils are designed to neutralize unpleasant odors, potentially concealing toxic fumes produced during flight operations. The International Association of Machinists and Aerospace Workers (IAM) has voiced serious concerns about this practice. They argue the masking effect could endanger crew health by preventing detection of harmful emissions from the oils themselves.