Useless Information

[Tonyrodz]

Don't forget the Suburban holds about 13 gallons of fuel more than the Toyota and I think 11 more than the Nissan. That will factor both in weight and range.

I haven't pushed the limits on my 2500 like I did on my Tahoe, but that's the main reason that I went to the 2500. I think that if I were going to run the 2500 closer to it's max and more often, I would probably opt for a 2500HD PU with Duramax. Even with a slightly higher fuel cost, the Duramax would be a bit more efficient under load.

Me and a friend drove across country pulling a 54 ft enclosed trailer with 2 Lambos inside. We drove a Silverado(forget the year) had the Duramax and Allison trans. It didn't even breath hard. That was an awesome setup.

 

[Debonair]

...Run a couple tanks of 91 and watch your mileage go up. Pick Exxon Mobil or Chevron, not Shell or Costco.

I went back a few pages looking for an explanation on this one. Care to point me to some educational reading? My wallet likes Costco 91.

 

[HiHoeSilver]

@swathdiver had me at "my excel towing calculator I made"
Lol

 

[Rocket Man]

@swathdiver had me at "my excel towing calculator I made"
Lol

Ditto. Lmao

 

[swathdiver]

I think that if I were going to run the 2500 closer to it's max and more often, I would probably opt for a 2500HD PU with Duramax.

True but the interior space and acquisition cost are major factors in deciding which way to go. Intheburbs, Bill, runs his 2500 right up to the limit with no problems whatsoever, they are tough trucks.

 

[joab]

One of the interesting things about my truck is that the previous owner never reset the fuel used counter and now it is about to surpass 8,000 gallons. The mileage just rolled past 120,000.

When purchased in May, the lifetime fuel economy average by doing the math was 15.4 mph and now it is 15.04; getting worse with me! Now I reckon those West Virginia hills helped the mileage as well as the cooler weather, I've never seen 18 mpg (an average lasting a tank full of gas) at any time since bringing it home from North Carolina.

Just completed a 1,200 mile trip and it's average fuel economy, fully loaded mind you, sits at 15.6 mpg.

In every other automobile owned, surpassing the mileage on the window sticker was easy, but not so with this truck! Maybe that's because the mileage on the window sticker was blank? LOL Published literature puts it between 14 and 15 city and 19 to 21 highway.

Do they get better mileage above 78 mph? I have a Montana that gets its best mileage at highway speeds that would make the driver well deserving of a ticket!

My 04 Suburban would get 20-22 mpg at 73 mph on flat Florida highways played with cruise for two weeks to find the best mpg commuting to work and that was with 190,000 miles on the 5.3

 

[swathdiver]

I went back a few pages looking for an explanation on this one. Care to point me to some educational reading? My wallet likes Costco 91.

Since I was old enough to drive I've been recording the mileage of every vehicle I've ever driven. In thirty years I've learned that not all gasoline is the same, whether by octane rating and especially brand.

If I want to lose 2 mpg I can always count on Shell gasoline to do so. And that is running their 93 octane. Mobil has surpassed Sunoco and I can get another 1+ mpgs by running Chevron's 93 right now.

The mark of greatest efficiency of a fuel is how many cents per mile does it cost to run. Not how much or little we pay per gallon. Millions of folks are duped into believing that low octane is equal to high octane because their manual and the internet say so. The gasoline companies are happy to take the money of folks too ignorant to use their most efficient fuels.

How many cents a mile does Costco's 91 octane deliver?

I've posted many examples here and on other forums, comparing different fuels and brands and the cents per mile they deliver. My brain is too fried tonight to provide another example.

If you have a Flex Fuel engine, I would reckon that right now, you will save the most money by using it as your cost per mile will be least.

 

[swathdiver]

My 04 Suburban would get 20-22 mpg at 73 mph on flat Florida highways played with cruise for two weeks to find the best mpg commuting to work and that was with 190,000 miles on the 5.3

That's fantastic for those older trucks! That's even great for my generation too. I've found the sweet spot with my older vehicles. With this truck, the cats were getting progressively worse skewing my mileage numbers and the one time I had to play with it afterwards it began raining. Had a long run this evening and her city mileage was in the 13s and ended up at 15.1 mpg running a couple hours or so at 70 mph.

Let me ask you Joab, what gear is in your Suburban and is it a 2WD or 4WD? Welcome aboard btw!

 

[gooffeyguy]

So true that all gas is not created equal.

I've been running E85 from the Mobil station near me at $2.19 gal (hasn't changed price in the almost 3 months I've been getting it) and have been averaging 12-13 mpg with mostly city driving.

About 2 weeks ago I filled up with E85 from a Phillips 66 for $2.09 gal and I only averaged 9-10 mpg on that tank.

Filled back up with the Mobil and so far back up to 12 mpg (have only used 3/4 tank since fill up).

2001 Yukon SLT
2011 Yukon Denali

Sent from my SM-G930V using Tapatalk

 

[Debonair]

So based on personal fuel millage records. I have been getting 12.7 on this beast . Costco is close to my work so its convenient and cheap, $3.69 for 91 right now. Ill give Chevron a few tanks and see how it does. Thank you for sharing.