I just read through Mike Busch's engines book. As a pilot and owner of a C-150 with a Continental O-200, I have a vested interest in keeping my engine running reliably. I was hoping that this book would help me glean some knowledge on how to decrease my chances of having an in flight engine failure. Here's what I got out of the book: 1. Avoid corrosion. This can best be done by flying often and using Camguard. Change oil regularly and at least every 4 months, no matter how many hours. 2. Avoid unnecessary maintenance, especially pulling cylinders unless absolutely required. 3. Oil filters: cut open for inspection. 4. Oil sample analysis (editorial: still not convinced there is great evidence that this helps avoid engine failures) 5. Monitor CHT and avoid going above 400 for Lyc's and 380 for Conti's (doesn't help that my C-150 does not have a CHT monitor... at least they notoriously run cool) 6. Avoid cold starts without preheat 7. Run LOP (again, impossible for me - but the point being to avoid high CHT's) 8. Boroscope is king (don't rely on compressions) Anything I'm missing? I guess I was hoping for more of a magic bullet to prevent engine failure, but I guess it's more looking for subtle abnormalities in the above recommendations - i.e., abnormal oil consumption, metal in the filter, or abnormal boroscope findings.