4 the dogs

with gas now going higher and higher and the 2012 uses the lower grade gas can the 2011 RX 350 be adjusted to use it. it has to be something simple they did not scrap the enigine. also at the last car show we went to the leather seats in every lexus took on the dye off the blue jeans and every seat had been stained any one getting this problem/ think the leather is much cheaper than what I had in the last one.