Insights, Tips, and Guides for Aviation Professionals

Summer changes four things you already check on every flight: engine oil behavior, tire pressure, density altitude, and the humidity that quietly makes density altitude worse. Here is what shifts in each one, and what to do about it before you taxi.

This is a straightforward guide backed by real products from National Aviation to help you choose the right oil. Unlike automotive engine oil, aviation oil must perform under extreme temperature swings, from a cold hangar start at -20° F to operating temperatures that can exceed 240° F, at altitudes where atmospheric pressure drops significantly. It must resist oxidation, prevent corrosion from moisture and combustion acids, suspend lead by-products from avgas, and maintain stable viscosity from the first second of engine start.