Why will my car crank and can be moved when it supposedly ceased up on 1994 Lexus ES300

The oil lite was on and off again I was told I need another motor I'm not sure if there was oil there or not it cranks and only drive to end of driveway how can this be possible

Asked by for the 1994 Lexus ES300
If it starts and runs, it's not seized. Does it quit running at the end of the driveway.
No it runs
Have a manual oil pressure test done, just possibly a bad oil sending unit.
So would it be a small or large investment to repair?I was advised to sell...???
If it's only a sending unit, it would be a small issue. If the oil pressure is bad, get rid of it or replace/rebuild the engine.
Thank you so much for your time and expertise
U Bet, Good Luck.
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