Don't judge your MPG based on the display. It's mainly there to compare driving style. If you really want to know what your getting, just divide your trip mileage by how much gas you put in it at your next fill up.

 

+1

John

 

i would check r change fuel filter,clean air filter,and change or check o2 put it on a tech 2 to see if they are lazy.

 

well I realized I have only got gas 3 times since gustav.50 bucks at shell,then 50 at walmart,then filled up last saturday full tank.Well I ended up with 255 miles out of this tank.Down from 370.Walmart gas is laced with ethanol and apparently some shells.So i'm gonna fill up with exxon and see what happens

 

please don't ever buy walmart gas anymore. Just because it saying it's the same octane as Chevron or Shell doesn't mean the gas is just as good. They don't put additives in their gas.

 

Good tip Random.
Another thing you should pay attention to is the calibration sticker that's on each pump. You'll see a white sticker with a +1 0 -1 or bigger/smaller based on the pumps output. There will be a rating for each octane. The bigger the + number the more gas Over $ it's putting out. and exact opposite for a - number.
a zero means it's pumping out the exact dollar amount of fuel within a small margin of error.
The pump I go to always has a +1 rating for 91octane. So I actually get a little more fuel than I'm paying for.

 

Ours looks like this

 

I really only did it because my work gave us all $250 gift cards for walmart for going 2 months with no accidents

 

I believe the front and rear O2 sensors are the same.

 

nope.