The new 2010 RX-350 now requires 0W-20 engine oil.
See attached oil spec from the owner's manual.

>Use Lexus approved “Toyota Genuine Motor Oil” or
equivalent to satisfy the grade and viscosity shown
below.

>0W-20 is an oil that provides optimal levels of fuel
efficiency.

Anyone else see this and is 0W-20 available at your local Lexus dealership?