FAA AMT Airframe Practice Exam 2026 – All-in-One Study Guide to Master Aviation Maintenance Technician Certification!

Synthetic base hydraulic fluid is different from petroleum-based fluids in that it has a higher flash point. This means that it is less likely to ignite or catch fire, which is important for safety in high-heat environments. Option A is incorrect because it has a low flash point. Option C is incorrect because the color of hydraulic fluid can vary and is not a defining characteristic. Option D is incorrect because synthetic base fluids typically have higher viscosity than petroleum-based fluids, making them more resistant to changes in temperature and providing better lubrication.