Leons wrote:
Almost the first sentence the sargent said at our reciprocating engine course in the USAF, and pointing to the engine beyond the large glass window sitting in the test cell, "This is an ENGINE not a MOTOR". He got his point across w/out any Huhs and the like. LOL
You might have asked him if he would like to take a ride in your motor car over to the place where there is a Ford Tri-Motor airplane to check out.