Originally Posted by oxycodone
Also, the octane rating is not going to have any effect on gas mileage.
I'm sorry but you are wrong there. I've used the cheap stuff 87 octane in this car without any problems and I get 19 mpg, then I switch to Premium and mileage jumps up to 22 mpg, thats a big difference. I've done this test many times and I always get the same results.