Does Fuel Quality Affect MPGs?

It's all the same to me. I guess one could argue winter fuel is "lower quality".... then again, it will run at colder temperatures. This is especially true up here in Canada. The winter blend will cost you about 1 mpg. But no additives needed. Your #2 without additives may experience fuel gel up way before our pump fuel will.

Some people say petro has best fuel. Or ta. Or loves. I've burned them all. It all comes from the same ground, probably the same refinery. If you believe some fuel station saying they use some additive to give better mpg consider this scientific question: just how, exactly, do you increase the energy content of 1 unit of fuel? Answer: you don't!

 

Before the merger Flying j owned thier refineries. Don' no how or why, but thier fuel ALWAYS gave me the best mileage. But nowadays I think I get the same mpg from everybody. Of course depending on what the content count of bio fuel is. No I don't no why and can't explain. But i no tank after tank the numbers show me over and over

 

I mean a higher quality fuel usually burns more efficiently so I suppose the argument could be made that you might get better milage on the better fuel because your engine doesn't have to work as hard.

In town I fill up at sheetz rather than exon or the other ones. And the reason being when Hurricane Matthew came through back in 2016 and flooded the area out, the exon in town was caught selling contaiminated fuel and it blew a few engines. Lesson here boys and girls: when the flood waters wash out the sewage treatment station and washes poop water and puts a gas station underneath said sewage water, ya might not trust the gas. Besides, I get more bang for my buck with sheetz.

But as far as the mpg thing, can't say I've ever noticed a difference.

 

"Sheetz gas- without sheet water"

 

Yup!! Petty much!! There's also a reason I don't really trust the McDonald's in town either.

 

This link explains it well:
What's the Deal with Winter Diesel Fuel? - NW Fuel

 

If the engine can burn the fuel and run, then it's all the same. However the one thing that did change which is rather immaterial for our purposes would be the fuels from the 60's and 70's leaded gasoline to ethanol (Which is a form of water) and going back even more, all the way to around 1910. Refining capacity in terms of quality made a difference in what you got out of a gallon of gasoline which itself was once considered a waste product to be burned off.

There was a fuel dealer in Maryland capable (Note I said capable..) of selling leaded gasoline for off road use only. And you can get it via Avgas today, however I think 2018 is the last year you see it in use because of FAA combined with a declining percentage of airplanes using it (Private planes like 172 only) you have what is called mo gas and a conversion called Impulse for small planes to run on ethanol fuel.

If you were eve caught with leaded gasoline in a older car on public roads the fines were big time. 5 figures.

 

Yes, fuel from some places is better. Engine has more power, working quieter. I use mostly PFJ so it depends on supplier in this area.