"I took my truck in with oil light on...was told it was a..."
I took my truck in with oil light on...was told it was a sensor and still OK to drive. They replaced the sensor the next week. The oil light still came back on. Said it was probably the contacts, but couldn't look at it then, still OK to drive.....well, I ended up needing a new engine as that one apparently didn't run too well WITHOUT getting oil. :(