Complaint Review: Toyota Motor Sales USA Inc.

My 2002 Toyota Highlander never gave me a problem until the summer of 2013 when I noticed the oil level low between changes. I took it to the dealer and we decided to monitor the oil more closely between changes. It kept getting worse to the point that the car used a quart of oil in 500 miles. Whenever the car drove at speeds of 65mph or better, oil consumption increased. After reading several oil sludge blogs, I discovered this is a common symptom. After complaining to the dealer and following the "proper channels" to report my problem to Toyota, Toyota says it will not fix my Highlander because I reported the problem too late. I never knew I had a problem until this summer and had no knowledge of the oil sludge class action lawsuit. My Highlander has only 70,000 miles and right now is probably worth salvage value. I'm stuck with an expensive piece of junk that was the fault of a manufacturer’s defect that Toyota will not fix. Is this another case of buyer beware or will Toyota do the right thing and stand behind their product?