Final answer:
The grade of fuel to be used in the PA-28 aircraft depends on the specific model and engine it has. Most PA-28 aircraft use aviation gasoline with a grade of 100LL (low lead). Using the correct grade of fuel is essential for safe and efficient operation.
Step-by-step explanation:
The grade of fuel to be used in the PA-28 aircraft depends on the specific model and engine it has. Most PA-28 aircraft, including the popular PA-28-161 model, use aviation gasoline (avgas) with a grade of 100LL (low lead). This fuel is commonly used in small piston-engine aircraft and contains a low lead additive to improve the performance and longevity of the engine.
Using the correct grade of fuel is essential for the safe and efficient operation of the aircraft. The PA-28's engine is designed to run on avgas with a specific octane rating, and using the wrong grade of fuel can lead to engine damage or poor performance.
It is always recommended to consult the aircraft's operating manual or consult a certified aviation mechanic to determine the correct grade of fuel for a specific PA-28 aircraft.