2014+ Gas Mileage (MPG) Topic

[Tattooo]

I have been getting better milage as the truck breaks in as other members said would happen

[meanjoe]

2014 Silverado Double Cab 4x4 5.3L 3.08 gears......

 

I am getting 18 mpg city & 23 mpg Hwy....

 

Edited July 20, 2014 by meanjoe

[calgator73]

 

Not sure where it went...there was an 89 octane thread not long ago...lost it. Anyway. There is supposed to be a benefit to running 89 octane due to differences in LTFT and reduced knock retard. Before taking this trip I had run nearly 4 tanks of 89 octane. Turned 11k miles on my trip to do a kid exchange. Trip was 628 miles each way in mountainous terrain (elevation on trip ranged from ~40ft to ~1900ft) and run on 89 octane. On the way out in light rain I averaged 67 mph and 21.8 mpg while exceeding 80mph once. On the way back 68.4 mph and 20.7 mpg while exceeding 80mph six separate instances up to 90. Basically in a hurry to get home. Driving patterns roughly the same no matter the octane and no increase in fuel economy. btw 5.3, 4x4, CC, std bed, 3.73

Edited July 20, 2014 by calgator73

[NoProblem]

I just filled up before I towed a 2300 pound trailer the other day, I went a total of about 140 miles trying hard to be as easy on the pedal as I could, but the best it would give me is 12.2 mpg.

 

They have it geared so you really cannot feel the trailer behind you - maybe if you gunned it from a dead stop or tried passing at highway speeds I guess maybe then you would notice it, but just normal driving I didn't even feel it behind me. They have it setup for performance, which is good - but wow, I was surprised how much more fuel it uses with just a relatively light trailer.

 

I wonder, does anyone know if there is an easy way to manually switch between V4 and V8?

Edited July 21, 2014 by NoProblem

[calgator73]

Really... Just gotta drive by foot, no cruise and take advantage of hills.

[SY2455]

I haven't posted in awhile because we are moving. Here is a update on the mileage while towing a 7500lb loaded trailer 2400 miles. During this trip we went up hills and down hills, we even did some flat land driving. The towing was done in the tow-haul mode on the transmission. We got a low gas mileage of 9.5mpg, a high of 19.5mpg and a complete trip mileage of 13.5 mpg. A friend of mine with a Ford F-350 diesel told me that I get better mileage then he does with a lighter trailer.

[calgator73]

What are your specs again?

[SY2455]

What are your specs again?

2014 CCSB 6.2 LTZ with 3.42, most of the time was spent at 70-75mph on cruise control.

[TX_AT]

Consider yourselves lucky. After my tire swap and 2.5 level kit, I'm getting 14-15 mpg on the highway at 70-75 mph. This SUX but I only have myself to blame, I went with looks over economy. I didn't think it would be such a drastic change but I was clearly wrong. My tires are 275/65/20 Toyo Open Country M/T (34x11 toyo specs). Don't get me wrong, I love the truck but I do miss the good mpg days! lol

[Tattooo]

ill never complain again

[courts94s]

My 4.3 was struggling to switch to V4 mode. So I filled up w/ 91 Octane top tier gas and it is performing a lot better! My average was 17 mpg with the low grade 87 Octane, and now my average for the 400 mile average is 20.0 mpg. Once I run another tank through it, I should be 21or 22+ mpg.

 

 

Go Army! GO ORDNANCE!!!

[calgator73]

That's awesome!

[calgator73]

2014 CCSB 6.2 LTZ with 3.42, most of the time was spent at 70-75mph on cruise control.

That's exceptional. I'll post up my results next weekend after our camping trip.

[Tattooo]

 

Averaged 12.2 driving around 75 mph 373 mile round trip pulling my yamaha rhino & trailer with tow/haul button on the entire time

[Ventilator]

5.3, 3.42, 87 octane. Driving back and forth to work. Mixed driving.

Edited July 27, 2014 by Ventilator