I got a 2005 model RX330 with 53800 miles on it. For past few gas fillings the cruising limit indicator shows 280 miles on full tank top-up. Earlier it used to show somewhere around 310. I tried wheel alignment, fuel injection cleaning, changing oil grades but no help.
How much your RX330 shows on full tank? I went to dealer to check and as per them everything looks fine.
Want to learn from everyone'e experience and some tips to improve gas mileage.