My new, in the box, Lycoming engine was in storage for six years and another year on the fuselage before first starting. I did nothing special at all to the engine. Before first start I removed the bottom four plugs and drained the oil that was in the cylinders. Then I cranked the engine until I got oil pressure. Then I repalced the plugs and fired it up. It now has over 450 hours and is perfect. Burns practially no oil, has good compression and runs fine. I got all sorts of bad advice about the engine. One guy actually said that I had to tear it down first to inspect for rust. Another suggested that I fill the crankcase untill I couldn't get any more oil in it and turn it upside down. The call to Lycoming settled it. I just did what they said.
Bruce Reynolds
RV-6A
Over 450 trouble free hours