Update FWIW. Daughter reports oil level is within normal level but perhaps could take a half quart so she added about that much (although she said she spilled quite a bit so who know exactly how much was added). Light was off for a while, then came on for ten minutes, that on and off some and finally on steady. She will check in the morning when dead cold to get exact reading. Engine seems fine with no noises, excess heat, nor tailpipe smoke and she has run about 9 hours today. Frustrating for me and wish this part could just be replaced more easily. I will post again when I know more.