Alan 
2006 Toyota Avalon Sedan Limited 4dr Sedan (3.5L 6cyl 5A)
sudden loss of engine oil
 A friend with 30,000 miles on same model reported sudden loss of engine oil with no engine light. I talked with local maintenance supervisor about this.  He reported this was a regular problem, especially at 50-60k miles. Replacement rubber hose hard to find. No recall yet but he expects one any day.