not someone. I did. I bought mine in March 2010 from a guy that claimed 36-37 at the best. I install K&N filters on all of our cars. I had 42.5 average on nav system by late September.
i also live in Seattle area, where it's very uneven terrain. Same time, I flushed her and filled with Amsoil.
I am averaging 39.6 I believe now, tracked on fuelly.
I am not a serious hypermiler, but I do drive her humbly.
most of good mpg is driving habit and less load on the car. temperatures below 55 and speeds above 55, along with city driving, kill mpg.
mine does NOT like Chevron gas. I routinely fuel at Sam's and we are both happy with it.
