Hi All,
I have been tracking this thread today ... the oil issue has just popped up in the last few months with my Rav4 and I am researching now and finding I may be missing the 10 year window by literally days. I am planning to fight tooth and nail to get as much coverage as possible on the issue.
But, should Toyota not come through for me, I am wondering what anyone thinks is the best path in the absence of warranty coverage... I am not a high car-IQ person. Could/should I consider driving the car as normal and just adding 1-2q of oil every few months? Is that going to be problematic for the engine? Is the engine probably already damaged? Is getting this fixed ($3-5k?) an absolute necessity or is there a "workaround?"
Apologies in advance if this is a stupid question.
I suspect you won't go very far on your fight with Toyota. It is quite obvious to me that they were willing to screw their customers over to save money, with the kind of oil consumption test that they designed, i.e., stringent time and oil consumption requirements designed to exclude many customer with the defective engine.
What you should do with your car really depends on the condition of your car and how many miles you have on it. If there are many miles on it and the condition is not great, it might be best to keep driving it and adding oil. However, if it is working perfectly and the mileage is not high, you might want to spend some money to repair it because the piston ring defect might cause cylinder wall scarring due to oil starvation, damaged valve stem seals, oil fouled spark plugs, etc. Take a look at this video, the guy managed to fix the problem by drilling 2 more holes in the piston and replacing the rings on it, a local engine repair shop with good reputation might be able to do it for under 2k:
(For engine longevity, you should also consider replacing the valve stem seals and spark plugs if you choose to repair the engine.)