Thanks Jocelyn This is starting to feel like trying to find a needle in a hay stack!! It doesn't seem like anyone (so far) can really tell us what is wrong with our cars. I have 2 small kids and I'm really apprehensive to drive to far with them in the car in case something goes wrong. I'll give this oil thing a try and let you know how it goes. That's a bummer your car is still not right after spending $$ on it, that really frustrates me. There is plenty online on this topic, kinda off putting, I am a really big fan of my Rav4 and the last thing I want is for it to end up on the metal heap :(