Jump to content

Recommended Posts

Posted

3.23 gears, 6.2L engine, stock tires, mostly highway, using 91 octane from Valero

Whaaat, there's an app for that? Why have I been using Excel....

 

Here's my log since the truck was new. Almost exclusively using E85 so you can see the comparison vs regular fuel but I'll have to do a few fill-ups with 87 now that the weather is warmer for a better idea on what my true cost savings may or may not be. Also interesting to see that the DIC mpg is always high.

post-138443-0-02730000-1430412576_thumb.png

post-138443-0-02730000-1430412576_thumb.png

post-138443-0-02730000-1430412576_thumb.png

post-138443-0-02730000-1430412576_thumb.png

Posted (edited)

Whaaat, there's an app for that? Why have I been using Excel....

 

Here's my log since the truck was new. Almost exclusively using E85 so you can see the comparison vs regular fuel but I'll have to do a few fill-ups with 87 now that the weather is warmer for a better idea on what my true cost savings may or may not be. Also interesting to see that the DIC mpg is always high.

Not sure for apple, but for android, I've been using Fuel Log for about 5 years.

https://play.google.com/store/apps/details?id=ch.simonmorgenthaler.fuellog&hl=en

Edited by brocka
Posted (edited)

Click my sig and you should be able to see every fuel up I've had with this truck. The god awful MPG's early in the truck's life are the result of a move I made from Pittsburgh, PA to Illinois for a new job. I had free time on the weekends so I would rent a 6' X 12' U-Haul trailer and make as many trips as I could. Other than that, the truck looks to average about 17-18MPG. I drive 12 miles to work every day, about 60% City and 40% Interstate.

 

Also, for Apple I'd highly recommend Road Trip for tracking MPG's. I've recently started using Fuelly's app but it's been rocky a time or two.

Edited by Darmichar
Posted

Whaaat, there's an app for that? Why have I been using Excel....

 

Here's my log since the truck was new. Almost exclusively using E85 so you can see the comparison vs regular fuel but I'll have to do a few fill-ups with 87 now that the weather is warmer for a better idea on what my true cost savings may or may not be. Also interesting to see that the DIC mpg is always high.

You should make *that* an app, I'd buy it. The savings of E85 vs. 87 are something that isn't offered elsewhere that I've seen.

 

I've never ran E85 through mine, strictly 87 Octane. May be time to give E85 a whirl and see what I get from it.

Posted

I use ACAR on android. Full backup. Supports import from almost anything else. Fuelly.com purchased it but no auto upload just yet

  • Like 1
  • 3 weeks later...
Posted (edited)

Whaaat, there's an app for that? Why have I been using Excel....

 

Here's my log since the truck was new. Almost exclusively using E85 so you can see the comparison vs regular fuel but I'll have to do a few fill-ups with 87 now that the weather is warmer for a better idea on what my true cost savings may or may not be. Also interesting to see that the DIC mpg is always high.

 

I've been using Gas Cubby for iPhone for awhile now. You can specify which fuel grade you use as well. I've only run 87 since E85 isn't available close enough to me.

 

B0E82AA2-678C-4E7B-B9C3-74C923246B3A_zps

 

B97BDAB3-2C81-45C6-B7AE-25FC7BA7A2C0.png

 

341236F0-867B-4238-B28B-AC58521C2909.png

 

409DBDFE-A66D-46B5-8A7F-8F90D78495A8.png

 

78EB6330-AE26-43B3-B8F6-38FD67E0486F.png

Edited by surebuttercringe
Posted

2nd post as a member here

 

2014 Silverado 5.3 4wd ext cab

 

best 25 avg so far has been 27.9

best 50 avg so far has been 25.1

best 400 avg so far has been 21.9

 

Truck had 250 miles on it when I bought it and I reset the B trip and have not reset it since owning it and it has averaged 19.2mpg since I purchased it. It currently shows right at about 12k miles.

 

My commute is mostly hwy and I usually run 60-70mph so I'm sure that helps but I have been really impressed with the fuel economy thus far.

 

I've noticed economy gets better with warmer weather and it really drops off above 70mph.

 

I usually get 22mpg on my 40 mile (each way) commute and the last 25 it usually hits 25mpg avg on the DIC.

Posted (edited)

Dr. Evil, I am also from East TN and have the same set up as you, but I am not getting what you are. I have had my truck for 9 months and during the winter I got 18 mpg and now that it has warmed up I am up to 19.5. I am not really too impressed considering most of my driving is on highways. My last silverado was a 2002 ext cab with the 4.8 and 4.10 gears and LT Nitto terra grapplers and I got 16mpg in the winter and 18 mpg in the summer. I figure once I put on AT tires and remove the front air dam I will probably be getting the same gas mileage as my 2002! I can't really understand how a truck with this much technology can't do any better on gas. I also do not go off of what the computer tells me, it is usually 1 mpg off or more. The upside is that this truck has a crap load more power than the old 4.8!

Edited by tnchevy
Posted

TNCHEVY, I just replied to the other thread before I saw this reply.

 

I usually get my gas at Weigels but that's just because its convenient. I have no preference.

I did notice that at about 2k miles it started getting better and by 8k it was noticeably better.

I keep my tires at 35-37PSI and don't hot foot it which helps I'm sure. I have noticed that if I drive 80mph on the interstate my fuel economy drops significantly. 65mph seems to be the sweet spot with a range of 55-65 being best overall. I don't drive that slow on the interstate, usually I'm a 70mph guy but occasionally I'll do 60-65 (in the right hand lane) just to see how high I can get the average.

 

I had a 2008 CC Silverado with a highway gear and a 4.8. That thing was bad, just horrible to drive on anything other than flat. It would downshift if I hit a June bug. It didn't get particularly good fuel economy either.

 

I just got back from the lake, pulling the boat with 5 people in the truck to/from so I'm at 13mpg for the last 25 right now.

Posted

I am rarely on the interstate but on a lot of 55mph two lane roads in TN, VA, NC which are rarely flat. This truck pulls them just fine but only 1.5 mpg better than my 2002 which had more ground clearance and heavy LT tires with 4.10 gears is kind of sad IMO. I've got 6,000 miles on mine so it is pretty much broke in. Gas mileage is not a huge concern for me but with reduced ground clearance, lighter materials, street tires, direct injection, and cylinder deactivation I expected more. My work truck is a 2012 Ford F150 with a huge brush guard and winch (3.55 gears) and when it had "AT" street tires on it I was getting right at 20 mpg in the summer, and this is from a truck without the fancy fuel saving gimmicks. I've got heavy LT tires on it now and I am down to 17.5 mpg in the Ford.

Posted

I am rarely on the interstate but on a lot of 55mph two lane roads in TN, VA, NC which are rarely flat. This truck pulls them just fine but only 1.5 mpg better than my 2002 which had more ground clearance and heavy LT tires with 4.10 gears is kind of sad IMO. I've got 6,000 miles on mine so it is pretty much broke in. Gas mileage is not a huge concern for me but with reduced ground clearance, lighter materials, street tires, direct injection, and cylinder deactivation I expected more. My work truck is a 2012 Ford F150 with a huge brush guard and winch (3.55 gears) and when it had "AT" street tires on it I was getting right at 20 mpg in the summer, and this is from a truck without the fancy fuel saving gimmicks. I've got heavy LT tires on it now and I am down to 17.5 mpg in the Ford.

What engine was in the Ford and what's in your new one? We had a 04 F-150 work truck V6 single cab long box until a month ago at work and it did around 18 highway (it was beat to hell and back so if it was still in new condition it may have seen 20MPG) but the new Silverado V6 2014 single cab long box I got my dad to purchase is running up to 26 on the highway. 20 when we have a few refrigerators or a bedroom set in it (we own a furniture store)

Posted

My truck is the 5.3 V8 with 3.42 gears and factory street tires. My work truck is a 2012 with the 5.0 V8 and 3.55 gears, both trucks are 6 speeds. My mpg and yours will always be different because of the terrain we live in. Down your way in NO it is flat as a pancake so your truck is not working as hard and is in V4 more often. There is nothing flat up my way and I am not on the interstate very much. I keep detailed spreadsheets of the gas mileage of every vehicle I have owned in the last 15 years (including my motorcycles) so I have a lot of data to go off of. I had my 2002 for 12 years and my overall average was 17.8 mpg and the truck was rated at 14city 18hwy (still have the window sticker). After 9 months and 6k miles my 2014 is at 18.85 mpg over all average and rated at 16city 22hwy. My 2012 is rated at 14city & 19 hwy and I was averaging 18 mpg for the 2 years it had the factory tires. I am a conservative driver and have always got gas mileage on the upper end of what they say the vehicle gets but not on this one.

Posted

 

 

My truck is the 5.3 V8 with 3.42 gears and factory street tires. My work truck is a 2012 with the 5.0 V8 and 3.55 gears, both trucks are 6 speeds. My mpg and yours will always be different because of the terrain we live in. Down your way in NO it is flat as a pancake so your truck is not working as hard and is in V4 more often. There is nothing flat up my way and I am not on the interstate very much. I keep detailed spreadsheets of the gas mileage of every vehicle I have owned in the last 15 years (including my motorcycles) so I have a lot of data to go off of. I had my 2002 for 12 years and my overall average was 17.8 mpg and the truck was rated at 14city 18hwy (still have the window sticker). After 9 months and 6k miles my 2014 is at 18.85 mpg over all average and rated at 16city 22hwy. My 2012 is rated at 14city & 19 hwy and I was averaging 18 mpg for the 2 years it had the factory tires. I am a conservative driver and have always got gas mileage on the upper end of what they say the vehicle gets but not on this one.

I don't see what your complaining about here. Your MPG even on the highway isn't going to be over 20 mpg because of the hilly terrain in TN. Personally if I was getting almost 19 mpg on the highway in your area I'd be estatic.

Posted

You are right and I am not complaining about the gas mileage as much as I am complaining about all this extra stuff going on with this new truck to improve fuel efficiency nets about 1 mpg more than previous models for my driving habits and area. The one thing I am definitely not complaining about though is the power. I owned a 4.8 and had a 2003,2006, and a 2009 with the 5.3 and 3.73 gears as work trucks and this new motor blows them away in the power dept.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Latest Articles

  • Posts

    • I hope to high heaven this is wrong. My Chevy farm trucks frame is lasting way longer than a newer Nissan Titan XD I got for a steal, and it only pulls trailers. A decade younger and it's frame is already way rustier than the waxed Chevy I drive across longs and ditches. Also, hasn't Ford been having tones of troubles with rusted frames? 
    • Batteries don’t always show signs of a few years ago my vehicle started fine in the morning and took me to work. After work the battery was completely dead and I needed a jump. No, I didn’t leave anything on and the battery was only a couple months old. It was replaced under warranty. 
    • AFM is confirmed in the Corvette engine, so I'm assuming the higher volume trucks will get it as well
    • If his battery was that bad I would think it would have been showing signs before this that were ignored. Stinks that it happened the way it did in rush hour traffic, but this seems like a pretty fringe scenario. I don't mind it that bad and never turn it off. The only slight annoyance for me is the slight delay between brake to gas, but I have gotten used to it and figure if it can save a little gas why not.
    • That is a good correction. I think “severity” was probably the wrong word for what I meant. What I really mean is closer to event priority, relevance, and actionability — not “this code is severe” or “replace this part.” I agree that a truck can have a lot of trivial or historical communication codes, and if the product starts pushing alerts for every stored or low-value event, people will ignore it very quickly. So the alert logic would need to be filtered. For example, I would not want a random old communication code to generate a push notification by itself. A useful alert would probably need to be based on things like: - new vs historical - active vs stored - repeated vs one-time - duration of the event - whether it happened near the driver-marked symptom - whether it happened together with voltage drop, reset, bus-off, misfire, oil-pressure change, etc. - whether the same pattern repeats under similar conditions So instead of saying “severity,” maybe the product should organize events by affected system and priority. For example: Misfire event: Show misfire counts / roughness first, then fuel trims, RPM/load, DFM/AFM state if available, coolant/oil temp, voltage, and related DTCs. Oil-pressure event: Show oil pressure first, but only in context — RPM, load, oil temperature, coolant temperature, DFM/AFM state if available, voltage, and baseline comparison. Communication event: Show which module/network/message dropped, whether voltage dropped, whether the recorder reset, whether it was active or historical, and whether it repeated. Voltage/reset event: Show battery voltage, crank/wake/sleep state, module reset, communication dropouts, and what came back online first. That also solves the display-order problem you mentioned. The main report should not always show the same fixed list first. It should show the system that appears abnormal first, and then the supporting values for that system. I also agree that the truck already has an oil pressure gauge and MIL. The point would not be to duplicate those. The value would be in showing what else was happening before and after the warning or symptom. For example, if the MIL comes on for a misfire, the truck already told the driver there is a problem. The useful part would be: - which cylinder or bank looked abnormal first - whether it happened after an AFM/DFM transition - whether fuel trims were already moving - whether oil pressure or voltage changed at the same time - whether the same pattern happened previously without a MIL On the OBD port point, I think you may be right for a consumer-facing version. OBD is much easier for the average owner: - easier install - easier removal - inside the cabin - easier phone connection - easier data download - easier to include a pass-through port for another scanner OBD is also the right place for DTCs, freeze frame, VIN, calibration information, Mode 6, and normal scan-tool parameters. The reason I was looking at ECM-side recording is that some events may be gone by the time someone plugs in a scanner, and some powertrain-side network evidence may not be available the same way through the DLC. But I agree that if an OBD-based version can capture enough useful evidence for most owners, that is probably the cleaner consumer product. Maybe the split is: - OBD/DLC version for most consumers - ECM-side version only if it proves it adds evidence that the OBD version cannot get - shop/pro version if deeper powertrain-side event evidence is actually useful So I would not want to force the inline approach if the OBD workflow solves most of the real-world problem. Your last point is probably the key product requirement: the report should be specific to the system showing the abnormality. Not “here are 50 parameters.” More like: “Misfire-related event detected. Here are the misfire/fuel/DFM/context values.” or “Oil-pressure-related event detected. Here is oil pressure compared with RPM/load/temp/baseline.” or “Communication event detected. Here is what dropped, when, and whether voltage/reset happened first.” That is a much better way to think about the report.
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...