apil

Congrats on the C. It is the real thing.

This is still on my todo list. Getting there slowly. Just finished replacing my control cables.

I'll second what was said earlier. Do it with an A&P first. Hopefully you have an airwolf and a quick drain. Have a good breakfast before changing oil -- hand tight is tighter that way My biggest pain is the number of screws to be removed in my C. And it is only one side that needs to come off.

New Mooney driver here as well -- congrats on getting a new bird. On the rpm range this graph from Vantage O-360 (that is based on Lycoming) gave me a good explanation as to "why". On leaning there is definitely a ton of difference between many schools of thought and recommendations. Lycoming graphs show best power at ~150F ROP and best economy at ~25F LOP. This is generally consistent with Mooney POH leaning recommendations. Depending on OAT and humidity so far I have seen some engine roughness leaning further past peak EGT. The specific consumption difference between running at peak EGT and 25F LOP should be in single digit % so it may not be very noticeable.