difference in gas mileage switching from Shell to Sunoco - Page 3 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Shock Em · 07-06-2011, 03:31 AM

Quote:

Originally Posted by skip_168

Its down hill on the way back.

Winner

Splitter · 07-06-2011, 06:52 AM

Sunoco is the best gas in the US. If you can find a reputable place.

Splitter · 07-06-2011, 06:53 AM

Quote:

Originally Posted by Z28RockStar

NOPE

Sunoco > Shell = Exxon = Mobil = Valero = BP

+1!

PAUL SS · 07-06-2011, 06:53 AM

Quote:

Originally Posted by baby02

Sunoco is corn free

I just got my first tank of Sunoco 93 and the pump had a label stating all gas is 10% ethanol. I had only used Shell prior to this.

toehead93 · 07-06-2011, 07:25 AM

My tuner has also known this about Shell gas and other for some time now. Who wouold have thought that gas companies would put something in their gas so it burns quicker, requiring the consumer to buy MORE...and the government is okay with it. It's like MSG for gas in there.

NavyDood · 07-06-2011, 08:15 AM

Quote:

Originally Posted by G-Oil Guy

I call shenanigans. Refining (regardless of the company) all use the same processes to produce the fuel. I was personally responsible for running units that produced ULSD (Ultra Low Sulfur Diesel).

Diesel has essentially one grade. i.e. one set of specs that all diesel fuel must meet. Now there is "summer diesel" vs "winter diesel" just like there is "summer gasoline" vs "winter gasoline". But that pertains to vapor pressure requirements, it does not affect the combustion ability.

Unless you were filling with diesel at a discount station (which buys off-spec material that most places won't buy) and attempted to blend it together to meet the bare minimum specifications something else is/was going on to cause the difference you were noticing in mileage.

Call it what you want. I have been driving the same 104 mile round trip commute for the past 4 1/2 years. I have gone through a shit ton of fuel in that time all from name brand stations in MD and all within the same pricing. My findings weren't just with one tank. Each time I went back to those two stations I had the same results, less mileage. I consistently get right around 19.5 - 20 mpg in my truck. Those two stations drop me down to 18 - 18.5 mpg. And I have never seen a difference in mileage with summer or winter fuel. My mileage difference is not as big a difference as the OP encountered though.

ZED SLED · 07-06-2011, 08:29 AM

Sounds like maybe the Shell you buy in VA has corn squeezins' in it and the Sunoco you bought in PA did not. I always saw that difference back when ethanol wasn't forced on me the way it is now.

skip_168 · 07-06-2011, 12:04 PM

Quote:

Originally Posted by NavyDood

Call it what you want. I have been driving the same 104 mile round trip commute for the past 4 1/2 years. I have gone through a shit ton of fuel in that time all from name brand stations in MD and all within the same pricing. My findings weren't just with one tank. Each time I went back to those two stations I had the same results, less mileage. I consistently get right around 19.5 - 20 mpg in my truck. Those two stations drop me down to 18 - 18.5 mpg. And I have never seen a difference in mileage with summer or winter fuel. My mileage difference is not as big a difference as the OP encountered though.

How are you calculating the fuel mileage?

NavyDood · 07-06-2011, 02:29 PM

Quote:

Originally Posted by skip_168

How are you calculating the fuel mileage?

Fill to the top of the neck everytime. Mileage divided by gallons used.

My odometer is accurate within five miles of what the GPS says over a 500 mile period. I have fine tuned the tire size with my Smarty to get it that accurate.

G-Oil Guy · 07-06-2011, 06:52 PM

Quote:

Originally Posted by Z28RockStar

NOPE

Sunoco > Shell = Exxon = Mobil = Valero = BP

Yea, the guy who makes gasoline and diesel for a living is wrong....

Sawyer · 07-06-2011, 07:21 PM

Depends on how much you mashed the gas compared to the trip home.

skip_168 · 07-11-2011, 05:42 PM

Quote:

Originally Posted by NavyDood

Fill to the top of the neck everytime. Mileage divided by gallons used.

My odometer is accurate within five miles of what the GPS says over a 500 mile period. I have fine tuned the tire size with my Smarty to get it that accurate.

thats about the best you can do... most likely it the uphill/downhill trick.. from florida to north carolina in my boxster i used 1.5 to 2.0 fillups up and 1.0 to 1.5 on the way back...

2SS 2011 · 07-11-2011, 06:35 PM

I have to say I am also getting great results from sunoco..

Caspers2SSRS · 07-11-2011, 07:56 PM

I've got a buddy (co-worker and next door neighbor) who swears that there are real differences between two of the aforementioned fuel brands and the milage they deliver, he'll drive the 76 mile round trip between his home and the nearest station that carries it, in a hurricane just to buy his preferred brand. I just roll around the corner a block from home and buy mine " the other brand". He still believes he's getting the better of the deal and can't for the life of it understand why he only gets 4 round trips to work and back before its time that he heads back on his refueling journey. I'm good for another three days and yes were both driving stock, auto 010 Gen5 SS's...........lol

07-06-2011, 07:25 AM	#33
toehead93 Drives: 2014 2SS/1LE Join Date: Feb 2007 Location: wpb fl Posts: 3,136 View My Garage	My tuner has also known this about Shell gas and other for some time now. Who wouold have thought that gas companies would put something in their gas so it burns quicker, requiring the consumer to buy MORE...and the government is okay with it. It's like MSG for gas in there. __________________ Used Racing Brake 2 Peice Rotors for sale: http://www.camaro5.com/forums/showthread.php?t=344754 Summit White 2014 2SS 1LE Recaros, NPP exhaust, Nav 2010 2SS A6 - sold.

07-06-2011, 08:29 AM	#35
ZED SLED Drives: 2017 Mosaic Bk ZL1 M6 Join Date: Jul 2009 Location: South of Raleigh, NC Posts: 9,493 View My Garage	Sounds like maybe the Shell you buy in VA has corn squeezins' in it and the Sunoco you bought in PA did not. I always saw that difference back when ethanol wasn't forced on me the way it is now. __________________

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07-06-2011, 06:52 AM	#30
Splitter Account Suspended Drives: '14 RRM 1LT/RS A6 Join Date: Mar 2009 Location: MA Posts: 2,065	Sunoco is the best gas in the US. If you can find a reputable place.

07-06-2011, 07:21 PM	#39
Sawyer Drives: '13 5.0 Join Date: Jan 2010 Location: Maryland Posts: 2,345 View My Garage	Depends on how much you mashed the gas compared to the trip home.

07-11-2011, 06:35 PM	#41
2SS 2011 Drives: 2011 Camaro 2SS/RS M6 Black Join Date: Feb 2011 Location: NY Posts: 963 View My Garage	I have to say I am also getting great results from sunoco..

07-11-2011, 07:56 PM	#42
Caspers2SSRS Caspers2SSRS Drives: Summit White 2010 2SS/RS Camaro Join Date: Jul 2010 Location: Somewhere north of a midlife crisis. Posts: 2,865	I've got a buddy (co-worker and next door neighbor) who swears that there are real differences between two of the aforementioned fuel brands and the milage they deliver, he'll drive the 76 mile round trip between his home and the nearest station that carries it, in a hurricane just to buy his preferred brand. I just roll around the corner a block from home and buy mine " the other brand". He still believes he's getting the better of the deal and can't for the life of it understand why he only gets 4 round trips to work and back before its time that he heads back on his refueling journey. I'm good for another three days and yes were both driving stock, auto 010 Gen5 SS's...........lol