So I have reviewed logs for ~20 Mooneys over the past year. Only oil change is at annual. Recent log book entries missing. Shock disks not replaced in over 12 years. Fuel leaks so bad it ate the wing walk material off. O2 bottle expired 10+ years ago. Speed brakes never lubed/maintained in 10+ years. Moritz components failed, some rookie work arounds, some functions just abandoned all together with no back up. IFR certified planes with no backup AI, response was use your iPad.
I guess I am old school. Oil change every 25 hrs or 90 days. Oil traps water, especially in humid climates. Fresh oil is a cheap insurance policy. If something is not as it came from the factory then I fix it. If it's useless like an old ADF, take it out.
I guess I am just a little disheartened when trying to find a well maintained plane. I think some don't have the $$ to maintain like things used to be 10-20 years ago. I understand things have become expensive but adjust your price to make up for your lack of maintenance.