our oil light went on less than 3 months after an oil change, then not even a mile later, the car stalled out. the mechanic we towed it to said that there was oil in the car, but it was like mud, and he couldn't figure out what was wrong with the car. we had it towed to a dealer where it's sat for a week, they said something like the engine was "drying up the oil", but also can't tell us what is wrong. has anyone heard of such a thing? there were articles about this same problem (oil sludge in toyota engines) in consumer affairs, but not involving rav4's.