Originally Posted by Hermes1
Besides the tremendous amount of data supporting the benefits of synthetic oil, a conversation with a medivac helicopter mechanic added icing on the cake for me. I asked how often they change the oil and he said we use synthetic and only change it when the engine is rebuilt. In between, oil is added as needed and they do an analysis.
YUP our acft mechanics as well never change the syn on engines they just top it off due to burn off so its always fresh in there.