Jesse
Well Known Member
I have an engine in my RV-6A that came off a damaged RV-9A, sat for about two years before running in my plane, then started flying at least once a week and often more. The first sample in this report was from the oil that was in the sump while the engine was sitting, so no corrosion from sitting I said in it. It was, however, not flown very often before it was damaged. We out new oil in and flew the first 20 hours or so. That oil had all the corrosion/wear from running after sitting for 2 years. You can see from the sample dates that it has been flown very regularly ever since, and you can see the wear metals decreasing. This proves, IMHO, that the absolute best thing for the engine is to fly. I am using Phillips 20W-50 oil in all except the second to last sample, where I think I used Aeroshell 15W-50. I have also used Camguard in all except the first sample.