Hello folks. I'm new to this forum, as well to Lexus ownership. Last Thursday my wife and I picked up a white 2005 RX330 AWD with nav and towing prep package. Other vehicles we considered before making our purchase were the Murano, Jeep Grand Cherokee, and Acura MDX. In the end, it really came down to my wife's preference, since this will be her car.
In any case, I was wondering what kind of AWD system Lexus uses. I've got an Audi, so I'm familiar with the Torsen and Haldex system that Audi and VW uses, but I haven't seen any references to the specifics regarding Lexus's AWD system. Is it primarily FWD, until slip occurs? Or does it constantly send some proportion of power to the rear wheels?
In a related question, how difficult/involved is it to change the rear differential oil? I was looking through the maintenance manual and noticed that it needs be changed periodically, and I intend to do most of the fairly simple things myself. I wouldn't imagine that it's *that* difficult, but I haven't had a chance to climb under the car to see what's under there.
Thanks in advance for any advice/insight.