I have a 2004 Lexus RX330 which I recently purchased. Everything has been going smoothly until I the other evening when I noticed temp guage climbing a bit while in drive thru. Never got near Hot, as soon as started driving temp went back down. Took to Toyota on Sat for oil change and they told me they noticed the front engine seal leaking coolant. They repaired today and now called back and said the intake is also leaking coolant! What is happening? Advice from anyone? Or has anyone else experienced these prob on Lexus?