Lycoming has a Service Instruction to answer that question.
Opinion
Aviation goes to school
High school students will be exposed to aviation in a positive light.
Douglas C-1 heads the Air Force transport family tree
In the history of the Air Force, the old Douglas C-1 of the 1920s was cast as a supporting player.
Ask Paul: Do I really need to change the oil in my rebuilt engine after just five hours?
Oil is one of the least expensive things you can put in your engine,
Things break
Things break, but they can also be fixed.
Come on Trent
Take responsibility. As pilot-in-command, you MUST ensure your airplane is safe to operate.
Ask Paul: Is this engine a good deal?
What sounds like a good deal could end up costing much more in the long run.
Flying with animals
Our canine and other companions deserve our protection.
With my toes in the sand and aviation in my heart
Not everyone can be in Oshkosh this week.