this is really weird, but on the last couple of tanks i got 28 mpg.

Yall might remember a year ago i did a test where i didnt rev the engine about 2k rpm when shifting and never went faster than 55. The best i got was 26 mpg. These last tanks have been mixed town/highway driving not trying to be conservative- 59 mph on the 55's, 64 mph on the 60's. I aint complainin! just cant figure it out! last winter i was averaging more like 18 mpg.