2008 6.0..first 6 Tanks..

[chill6x6]

Those of you considering a new Silverado with a VortecMax 6.0, here is my MPG info from my first six tanks. Truck is a 2008 Silverado 4X4 Crew 3.73 VortecMax 6.0 with 20 inch wheels.

 

Tank 1

DIC- 14.5 mpg

Actual- 14.2

 

Tank 2

DIC- 13.9 mpg

Actual- 13.8

 

Tank 3

DIC- 17.0 mpg

Actual- 17.5

 

Tank 4

DIC- 16.2 mpg

Actual- 15.8

 

Tank 5

DIC- 15.4 mpg

Actual- 15.5

 

Tank 6

DIC- 17.1 mpg

Actual- 16.7

 

OVERALL thru 6 tanks- 15.51 MPG ACTUAL.

 

No towing was involved. It's very easy to tell which tanks were mostly highway and which were mostly city driving. Overall I am really very pleased. I had been hearing horror stories about 6.0 gas mileage.

 

Also...Curious what MPG other are getting with their new VortexMAX Silverados..

 

[Bostonsfavson]

Sure can't complain about that kind of mileage! That's a nice truck Chuck

[ColoradoSkiCountry]

Getting about 13.5, mostly city driving, but with the 5.3L

[ws6_guy]

very good results there, & nice looking truck.

[D&SYukonDenali]

Chuck, did you happen to notice how accurate the DIC was on consumption?

 

I have always questioned the accuracy of the DIC, some times the DIC is within a couple tenths of the pump amount, other times it can off be over 1.5 gallons. Also, when I compare the guage to the DIC consumption, it just does not make sense. At half a tank, it states I've burned through a little over 9 gallons, but I have a 26 gallon tank (unless half of 26 is 9 at GM). I understand that some of the difference is reserve, but that seams like a big difference.

 

Just curious if it's just my truck or a common thing with the DIC and fuel guage.

[mitchell87]

What kind of speed were you going when you got the 17.5 tank. Obvisoully it was highway, but 65? 70? 75? just curious, thanks

[huero626]

The best I have ever gotten is 13mpg and the worst 11 mpg. Supposedly once I was getting 15 mpg in the DIC it said. My V-Max wastes a lot of gas, but it is still cool.

[07Graystone]

Was that photo taken at Riverchase Galleria? Near Costco? Seems familiar.

[chill6x6]

What kind of speed were you going when you got the 17.5 tank. Obvisoully it was highway, but 65? 70? 75? just curious, thanks

 

Good question! I was holding 70-71 mph on interstate, 62-63 mph on 2-lane.

 

Was that photo taken at Riverchase Galleria? Near Costco? Seems familiar.

 

Madison Square, Huntsville, AL. I think most malls look alike anyway!

[gvbhunt]

Not a Silverado, but a Sierra 6.0L. Worst that I have seen was 14.2, that was in snow, in traffic, and in 4x4. Best that I have seen was a hair over 20 but that is driving 65-70 on the highway, with it about 70 outside, and the AC off.

[cerbomark]

Just the difference between using a 10% Ethonol blend will make a difference of 2 MPG or so. If I see the 10% sticker on the pumps ,I pullout and go elsewhere.

[VMax2007]

Just the difference between using a 10% Ethonol blend will make a difference of 2 MPG or so. If I see the 10% sticker on the pumps ,I pullout and go elsewhere.

 

 

Not an option most places. ALL gas has 10% Ethanol in it during the winter here in MN. Most use it year round though.

[vranasaurus]

Just the difference between using a 10% Ethonol blend will make a difference of 2 MPG or so. If I see the 10% sticker on the pumps ,I pullout and go elsewhere.

 

Where did you get your numbers?

 

A gallon of E10 has 97% of the energy of a gallon of gasoline. I doubt that equates to a difference of 2 MPG.

[gvbhunt]

Just the difference between using a 10% Ethonol blend will make a difference of 2 MPG or so. If I see the 10% sticker on the pumps ,I pullout and go elsewhere.

 

Where did you get your numbers?

 

A gallon of E10 has 97% of the energy of a gallon of gasoline. I doubt that equates to a difference of 2 MPG.

 

Ethanol has a horrible tendency of picking up water. Maybe he got some E10 that had some water in it and it was affecting his mileage?

[Kanima]

I avg 16.1 have seen up too 19 hwy.

 

But here in the past month or so it has wen to 15 cause of the 10% winter blend in "Alabama" pssfft. Winter what freaking winter.