Just filled up last night and got a nice MPG surprise. 347.4 miles with 7.053 gallons, or 49.3 MPG. That's almost 7 mpg better than my lifetime Fuelly average!
In the past month, I've had an engine oil change, I replaced the trans fluid with Red Line, and I had the ECM recall done. I'm at 11k miles. Granted, it has been slightly warmer, and I did do slightly more 65mph highway than usual, but I did use the AC on the highway for some of that driving.
I've had many trips this fuel up, mostly suburbs, that ended up over 50mpg. Before this fill up, that was a rarity. I don't do anything other than accelerate economically up to the speed limit, and look ahead for where I can let off the gas and reduce braking. I'm trying to recall where I bought the gas, but it was likely one of my usual stations.
I guess we'll see on the next fill up if this was some kind of fluke!