Suddenly epic fuel economy??

Thats odd, did you reciently cross over one of the "break in" spots?

 

what is your MPG on the MFD for the current tank? It's possible you were able to put more gas in the tank in your last fill.

 

When I lived on the West Coast I always got better gas mileage with Chevron Gas than any other fuel brand out there. That Techron additive is some really good stuff and engines love it. Here in the Midwest I get the best gas mileage with BP Gas if I use Kwik Trip or any other type of fuel at another station I get 1/3 less miles than when I fuel up with BP. There is a major difference between Tier 1 and Tier 2 and 3 gas.

 

No Bill, the gas wasn't the factor the weather was. In our Northern California, the wind blows generally from the SW during bad stormy weather. So you were fighting a headwind going to SF and had the blessing of a tailwind on the way back. The same thing happened to me that day going to Merced from Modesto! To vastly improve freeway MPG, pic a big truck going the speed you like and follow safely "draft" behind. Just watch the distance to not get too close. The best is a tailwind and drafting behind a truck!

Lee

 

And if his fill up didn't happen in the Bay Area and have the corresponding tail wind for that tank . . . maybe it's because we have had a week of warmer temperatures (in the 70's) and he did some different type of driving than he is use to. Long drives at slower speeds in warmer weather can equate to "epic" mileage.

I too love the MPGs from tailgating a semi at the same time the wind is at your back.

 

I commute from Lincoln (north of Sacramento) to Fairfield twice a week and this is exactly what I experience. Lower MPG on the way to Fairfield but better on the way back. I am aware of temperature differences between a morning commute and a 6pm return home but I often make this trip during the middle of the day as well and 80% of the time I have the same results. If there is any wind at all it is usually blowing against me on the way to work.

Last night was an exception. I was at 55.2mpg on the trip to work and ended the return trip at 48.8. bleh!

 

Ok, the dumb site will not allow me to edit my above post for a typo so i made a new post.

The return milage was 54.8 not 48.8.

 

Well, since it's "for the record" . . . that would be many miles southwest of the Galleria Mall (in Roseville), or south across the street from the Arden Fair Mall.

If you are going to calculate your mileage off of just one fill-up, you are going to get widely differing numbers due to the irregularities caused by the gas tank bladder. If the bladder did prevent you from replacing just one gallon, your MPGs would have been back in the 52 MPG range.
MPGs should be calculated over a several tank span.

 

It could be one of those break-in spots. Since I've passed my 5K mark, my mpg stays above 50 mpg (avg.) on the display even though it is still real cold here in the Mid-Atlantic.