[rudi dudi]

Absolutely… However I don’t think the Op is going down that road or he wouldn’t be asking the original question.
I’ve started things on old belts before.Sure if it looks perished and brittle change it but they are considerably more resilient than people think.
I personally wouldn’t bother with an oil change(providing it’s not water contaminated or milky etc)or new plugs before flicking the switch and do the change afterwards.
Id be more worried about the Autobox valve body solenoid’s as it’s an Auto and sat for years than the engine.
A lot pricier and far more hassle than engine work.