My RX300 is in the shop, I left it there this morning after the "Check Engine" light came on for the 6 time. Twice I was told it was a loose gas cap, I bought that idea the first time because I wanted to give them the benefit of the doubt. I was also told once that a vaccum hose had come lose, a bad sensor and the last time it was in which was 4 days ago, they replaced the O ring by gas cap, but here I am again with that Check Engine light coming on again. As I stated, I have had no problems with this vehicle until they did that sludge recall on it, and its been down hill since then