Where to fuel for best fuel mileage?

You guys realize the fuel all comes from the same loading racks right? A friend of mine swore there was a difference so I took a pic of a line of tankers at a Marathon reload. Tankers of all favors all lined up for the same fuel.

 

True...the purchasers (Pilot, T/A, Petro, Loves....) all day and night are constantly searching out the best price (bulk) they can get for the days allotment. Until you get to the specific brand (Chevron, Shell, ARCO) like the gasoline for 4 wheelers and "branded" stations, you never know where to source, or the "recipe" for the blend with the additives for that specific brand.

Now that the winter/cold months are behind us, the additives will (have) changed and your mpg could likely change.

 

I've never kept track of the difference in mpg comparing the "winter blends" to the "summer blends".......I WONDER?!?

 

They mix a lot of no. 1 diesel into winter blend fuels... it lowers the cetane rating. Depending on where you're at I've seen my mileage drop 0.5 to 1.0 mpg.

 

remember hauling containers your empty half the time also.

 

It also depends on what part of the tank each truck gets too.

 

OK...you lost me on that one....would you clarify please?

 

All depends if its on the top middle or bottom of the tank.

http://www.biodiesel.org/docs/ffs-performace_usage/fuel-quality-and-performance-guide.pdf?sfvrsn=2

 

OK...I see what you're driving at. but the fuel purchased from the pumps at a truck stop/fuel facility, is very different from what is referred to in the link you provided. That link is aimed at large capacity storage, checking the top/mid/bottom levels for contaminates and break down. Truck stops/fuel stops, have a continual recycling of fuel from their tanks on site...the mix rate of old to fresh is rapid and continual. Which is why there are a minimum of 4 filters between the tank and the nozzle... the top/mid/bottom contaminate at a fuel facility (truck stop) varies due to the nature of refilling (re-supplying) the storage tanks...whether the "new" fuel is put into the tank from the top or bottom, and at what rate (flow per second) the transfer is done. The transfer rate will determine the "depth of mix" of stored (older) to fresh being delivered.

How's that for some technical mumbo-jumbo????