Mpg increase/ decrease

muzupan · Jun 16, 2017

I have a situation maybe there is someone that can give me greater insight. When I buy my fuel, both diesel and gas, in my local area Raymondville-Lyford Texas (RGV),I buy from Murphy Oil, The farm co-op, or Valero Oil which is basically the only options that I have. When I purchase gas/diesel around the Houston area my miles per gallon jumps up between 1.5 and 2 MPG. I keep that mpg increase when I buy fuel in Louisiana, Mississippi. My question is why? Driving style stays the same and it doesn't matter if I'm loaded down, pulling a trailer or driving empty. I have noticed this in my Ram 1500, Now in my 2500, and also my other vehicle when we travel out of our home area.

stimpy433 · Jun 16, 2017

I'd say it's the quality of the gas, lower quality gas = lower MPG.

RLJ10X · Jun 16, 2017

It took me s long time to get it thru my thick head, There is a difference in fuel. I am one of those guys that checks every tank. I constantly check fuel economy because it is the only realistic way of knowing the health of your vehicle.

Around here, Marathon, or Country Mark <which is Co-op, will yield 1.5 more mpg than everybody else's. BP does almost as good.

What you are seeing is the diference hi quality gas makes. Junk in, junk out.

rsdata · Jun 17, 2017

to the OP...
Is there a difference in price of say 20 cents a gallon? and does the loss of mileage make up for the difference in price per tank?

Typically when I refill it is 25 gal in my 32 gallon tank... if I save 20 cents/gal thats $5 in my pocket... but you claim you might have lost 50 miles on that tankful...

seems like it might be a wash to me...

I got the 3.21 gears and I am happy that my highway mileage typically is at about 21+ MPG give or take 2 MPG depending on the direction the wind is blowing...

Mpg increase/ decrease

muzupan

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stimpy433

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RLJ10X

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rsdata

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