no worries.

i bought a 90 parts car sitting for 3 years with 445k miles on it.
after stripping it i put the engine on a stand to rebuild it.

when i pulled the mains and rods off i spec'd the crank and found it exactly at factory new spec with not even burnish visible.

the bearing all had no discernable wear and measured as new. they were imo original

the rings were replaced. the cylinder walls had cross hatching clearly visible.
frankly i wasted my time and money tearing it down. it could easiuloy have been driven another few 00 000 miles.

recently i used the transmission in a swap and it shifts silky smooth with not a drop leaking.

the moral: change the oil, flush the transmission and drive it like you give damn about keeping it running and lo and behold it will run if not forever pretty far.