However, the gyroscopic effects of the heavy rotating engine produced handling problems in aircraft and the engines also consumed large amounts of oil, since they used total loss lubrication, oil being mixed with the fuel and ejected with the exhaust gases.
However, the gyroscopic effects of the heavy rotating engine produced handling problems in aircraft and the engines also consumed large amounts of oil. Castor oil was used for lubrication, since it is not soluble in petrol, and since they used total loss lubrication, the oil mixed with the fuel ejected with the exhaust gases.