IMO - Put 5 gallons of 100LL in each wing tank. Give her a good run, fully up to temperature. Change the oil and filter and run her for a few minutes again, burp it, put the battery on a tender and she's good to go.


8.1 says:

1. Operate the engine until the temperatures have stabilized for a period of 5 min (engine oil temperature between 50 to 70 °C (122 to 160 °F).
2. Switch the engine OFF.
3. Allow the engine to cool down.
4. Change oil.
5. Remove the top spark plugs and spray all openings with corrosion inhibiting oil.
6. Turn the propeller several times by hand in direction of the engine rotation, so that the corrosion inhibiting oil all necessary points reaches.
7. Install the spark plug in according the Maintenance Manual.
8. Close all openings on the cold engine, such as exhaust end pipe, venting tube, air filter etc. against entry of dirt and humidity.
9. Spray all steel external engine parts with corrosion inhibiting oil.