IO540 - I believe that I have twice as many wings, twice as many ailerons and getting my cowling off and on without scratching is easy with two but possible single handedly, however it will take almost three times as long!
Then in the engine bay I have several more hoses and fittings than you, unless of course your Cessna has an inverted system and smoke!
I change my oil and clean the screen every 25hrs - the waste is used to lube the hangar doors but also to augment my supply of creosote!
Stik