RossS 
2007 Toyota Prius Hatchback 4dr Hatchback (1.5L 4cyl gas/electric hybrid CVT)
engine no Methusula
 Even though I've changed the oil/filter religiously, at 225,000 miles now, I'm burning a ton of oil, and have to top off every 2000 miles. I'm told the only fix is a new engine (apparently ring and valve jobs are a thing of the past). I have a better fix - a trade-in. Even so, I'd still buy this car again. I guess maybe I'd use synthetic from day one, although I haven't done the math - that might actually be more expensive in the long run.