Twenty students in the Roland-Story agricultural mechanics class are completing their first unit of study which involved small gas engines. While working in this unit, they learned about principles of engine operation, tool identification, reading micrometers, how to troubleshoot engines and the need for proper lubricants for engines.


In one lab demonstration entitled “Oil Races,” the students learned the differences between various blends of oils as they held “races” with oil samples subjected to various conditions and then timed the flow (viscosity) of the oils as they raced down the track.