Now: 2008 STS-V, 1960 Eldorado Brougham Then: 2002 Escalade
Last night a bunch of us went to Turning Stone Casino to gamble and I had to fill up before we left. I put it in a tank of 89 and to my surprise there was no knocking or loss of gas mileage as I had experienced before. I don't think I am going to tempt fate and do this regularly but I did think it was interesting. BTW, I put on 230 miles and got 15.1 mpg, pretty normal highway #s for me.