In my last column, I described two of the most important factors in getting to full TBO with your aircraft engine: Getting the oil temperature up to around 180°F and using your plane frequently.
I recently read an article on oil change intervals in another publication. The author went on and on about what a mistake it was when the engine companies changed the oil change interval from 25 to 50 hours. To the author’s credit, he did mention in passing that there is also a four month oil change limit.
The problem is that the four month time limit is the most important criteria and the 25 hour and 50 hour limit are secondary. Most pilots hear the 50 hour change limit and stop reading, which is OK if you fly more than 150 hours a year. [Read more…]