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ZR2 3.0 Duramax Fuel Mileage 900 miles later
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- Опубликовано: 14 янв 2024
- It's been snowy outside and lots of idling / cold starts and snowy traffic driving. I would say it's actually doing well!
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I wouldn't worry about it because it's not broke in yet & temps have a huge effect plus they add detergents at the refineries for Winter too. ( Winter mix ) Things will improve in a few months either way as it warms up in a diesel. LOVE how mine goes in the snow. We got 15 inches up here in Northern NV a few days ago & it was a great test. BEAST MODE is all I can say, seen people wiping out everywhere like you showed in the clip. Not me. 😂
Even the transmission and diff have to break in for a while. It's also lifted, has less aerodynamic features, and rolling on knobby tires that all hurt fuel economy.
Got to love the car spinning out in the beginning of the video
0:10 I’m so surprised he didn’t break character because that’s crazy
He reacts to it at the end of the video. Crazy weather lol
@@jonh0130ohh I see now, I was about to say 😂
It might be better to put the additive in the tank before adding the fuel. It will help the additive mix with the fuel rather than floating on top. Just a thought. Enjoy you videos.
I’ve got a 2023 trailboss with the 3.0 and I get 24 pretty consistently if I’m running mostly highway I’m getting 25 and 22-23 in the winter if I idle a lot but I always keep a fuel treatment in my fuel at all times of course in the winter it’s anti gel and all other seasons it’s injector cleaner lube and cetane booster from Amsoil
I did a 4700 mile trip from Idaho to Wisconsin to Arkansas to Oklahoma and then back to Idaho over my kids Christmas break. Averaged 25mpg right on the dot. About half the miles were run at 75mph, the other half at 85mph, and of of course the miscellaneous toodling around while we were in each state visiting family. Worst fill up was 21mph and the tank of fuel prior was used up with a lot of start and stop and short trips. Best tank of fuel was 28mpg.
This was in a 2024 1500 z71 with the rst with the LZ0 engine. Pickup had 2 adults, 3 kids, all of our clothes and toiletries, extra washer fluid, extra def, extra tools for any unforeseen roadside issues we might’ve encountered, gifts for family members in the states we were going to. If I had to guess the pickup was probably packing around 750lbs. I was tickled with the fuel economy with everything considered. But I will say my pickup consistently gets worse fuel mileage then my buddy’s pickup which is basically identical with the exception that he has the LM2 Engine. Not sure what GM changed, but definitely something.
I saw that spin out on your left at the first of the video. Crazy out there!
$3.55 for diesel!?!?! Those were the good days here in Los Angeles
Those mileage numbers are great! I had a MY23 Silverado ZR2 with the 6.2, an S&B CAI, and an AWE exhaust. It's the tires and lift that hurt the mileage on the ZR2, (but otherwise make the ZR2 package so awesome.) I would get between 14mpg and 16mpg, maybe low 17's mpg at most on a long drive. Those were numbers on the dash.
exactly. It's the height of the lift that gets the vehicle off of the ground (assuming gearing isn't too wacked out re: tire size) that really kills mileage. I did a fun experiment with my '16 ltz on King coilovers and I lost 2-3mpg highway when the coilovers were run up (truck lifted) than when they were set low (where they stayed). FWIW. This is on 35's with 6.2 & factory gearing @ 3.23.
I really want to love this duramax but the 6.2 L86 is such a good unit. GM is also currently (March '24) charging nearly 2k more on some trims for the 6.2 than they are the 3.0. Odd.
Also, regarding the ZR2 platform. a couple of wishes:
- I really wish they would give the option for a Standard Bed length instead of the short box. Really isn't much room in those little boxes.
- I'd like to see the LTZ's and High Country's come with the ability to option-up with the ZR2 hardware (lockers, skids, lift, etc). I'd throw my damn money at them then. 🤑
I also use the fuely app and it consistently calculates better mpg than what the dash reads. ‘23 Sierra SLT
My previous trucks, it was opposite. Either way, hand calculated always comes out more accurate and I am happy with the start of the mpg.
My first 3.0 was getting about 24 average over 450 miles with a high of 38. Love those duramax
This makes perfect sense considering you have a small lift/leveling kit and larger more aggressive tires. You lose 10-20% typically after a lift and bigger tires. Right on where it should be.
Also a lot less aerodynamic front end with the narrower and higher up bumper.
Still a lot better than a gas ZR2. I have the 2.8 in my 20 ZR2, love it and fuel mileage has always stayed around 22-24 city/highway.
The LM2 i had would lose an easy 10+% when winter blend came in around November and as soon as straight #2 came back in the spring it would jump right back up. Around here winter blend varied by station but most of them would use a decent amount of #1 in the blend which would explain the drop im mpg.
I know it’s out of topic. But just fyi to 3.0 community. My 2022 LT Trailboss 3.0 D the fuel pump at the tank took a shit. Not sure if this is happening frequently. (16k miles)
Off topic or not, always welcomed ! thanks for sharing! In my experience as a tech, it's not a common issue as the pumps seem to be really good so far. Some issues, but rare.
I noticed since buying my LZ0 this past March, that my fuel mileage is down now a bit since the cold set in here in Chicago. I’d say 10-20%. I’ve purchased a FIA from winter cover that I’ll install in the coming days and see if it gets better. But not unusual for lower mileage in winter.
Curious why you'd need a cover when your truck is equipped with the automatic shutters
@@3.0dmax just a thought based on the lower fuel mileage. Seems to run colder and take way longer to heat up even with the shutters. It’s a cheap experiment on my part to see if the FIA winter cover will help seal it up and allow it to run better in its designed temp range. If you look at the shutters, it’s not air tight at all. The front cover I’m adding, seems to cover better. Again it’s an experiment to see if it improves temp control and helps the engine get warmer faster and keep the heat better in winter driving.
@@hammer-r doesnt this truck come with a plug up... in order to increase the oil temps, engine temps to make it run where it needs too?
@@sethlover6498 edited for type, not sure what you mean by plug up? I assume it’s the shutters you’re referring to. See my comment above. It’s still running cold when it’s cold outside and affects the fuel mileage negatively. This is my attempt to raise the temps on the engine and bay by adding a front cover.
@@hammer-r I mean isnt there a plug that hangs out of the front of the truck to plug power into... warm up the oil? glow plugs? something like that.. im asking because i do not know... i am a diesel idiot....
Seems to me like you're getting right around what the EPA numbers were on the sticker. Overall, it's not bad mileage for the conditions and size of the truck.
i have a 2023 1500 LTZ with duramax and ive noticed these winter days i get crap mpg, summer time ill get avg 26-27mpg but now with winter here super cold days i only get 24-25 mpg..
Fuel quality seems to vary and affects fuel economy. I was getting 28 mpg effortlessly using BP fuel but have dropped to 26 on the same drives using Kwik Trip diesel. I have heard similar reports from other guys with diesel trucks.
@@hochhaul my last 3 tanks have all avg 29 mpg, different stations too. i did move to a new home and commute 15mi each way via highway. i think thats the difference is stoplights and highway miles are insanely varying in mpg
Add Banks Pedal Monster and Straight Shot Water Methanol injection system. A 550 horsepower supercharged 6.2liter would be good power for the ZR2.
My 24 ZR2 with a 3.0 gets right around 21 mpg consistently. This includes warm-ups almost daily. Only have about 3k miles.
I'd say you're actually getting great mpg given all the add ons and height of a ZR2. My 2020 LM2 gets 22-23 in Reno NV winters
I agree ! i'm happy with the starting mpg.
As soon as it gets colder and doing more idling, driving on snow packed roads, drive line oils thicken up, probably using four wheel drive and so on, fuel mileage goes absolutely down the toilet on a lot of vehicles, a gas equivalent truck like yours would no doubt get crap for mileage in comparison as gas engines use a lot more fuel idling than a diesel. Even if you were in summer conditions, the fact that this truck has the larger and more aggressive tires with higher rolling resistance along with a lift creating more air drag it never will do as well on fuel but I don't need to tell you that as your already well aware of the negatives of lifts and larger tires. I am curious what it would do though compared to the 3.73 gears that sadly were not an option.
You are correct ! The 3.73's would be a help and I know that because I had these wheels/tires on the high country with a lift. I got 23/24 mpg in that truck with the Bilstein shooks lifted about 1.5"
@@DemonWorks I must have been asleep !, or more likely busy last summer/fall with harvest and youtube videos are not a priority at that point. So its very interesting indeed as it would have matched up pretty close to this truck, other than that that better gearing. I have to wonder if there is a GM engineer hitting his head on his desk wondering why his superiors didn't listen to him and offer proper gearing as an option if not standard.
It seems that these trucks when you lift them, they definitely have a substantial loss of MPG.
I have a 23 GMC at4. And before I did a leveling kit. On the highway doing 75 mph. My MPG would fluctuate on an hourly basis. Trip A my average 27 mi to the gallon on the gauge. Next trip being the same exact trip I might get 21 mpg. And I've seen as high as 31 these same trips mentioned.
Post leveling kit doing 75. I've never seen higher than 25 mi per gallon on the same trip. Did the trip today and I averaged 19.. how many were between 19 and 25 now. When previously I was between 21 and 31.
Also have a high idle issue. Maybe someone else has the same thing. My truck seems to idle a lot at 900 RPMs. I know when Regen is taking place it does idle higher but this is not regen as it's happening every 20 minutes or so. And if I put the truck in neutral and then back into gear it will drop Right back to 600 RPMs. And then maybe 20 minutes later it'll go right back up to 900 RPMs.
I just took it to the dealer for that as well as a bunch of other concerns I have and they did absolutely nothing and said absolutely nothing was wrong with my truck.
I know this is getting winded at this point. They've even told me, there are no software updates for the LZ0.
I received this truck in January of 23 and it has never had an update come available. Yet on your channel I believe you've mentioned two, maybe three calibration updates that the dealer has done?
I have the same high idle issues.GMC dealer told me to just leave it with them for a couple of days."You can't tell me as a service department that no one has come in with this same complaint"... It seems to be happening a lot from what I read and hear. good luck with yours!
As far as the MPG, are you hauling anything in the bed of the truck? I normally roll with fishing gear and boat related gear and it seems the truck looses abt 3 mpg when i have the bed loaded. I carry some tools, bass boat seats, boat spare tire in the bed.
4k miles on my 24 AT4...cannot get over 23MPG, even with the non MT tire package. 23 LTZ got 24-30MPG all day long. I am thinking it's the lift. Because that's about the only difference. I do wonder if this new model year has different tuning for emissions purposes. The 24 has consumed no oil and regens about every 350 miles.
It’s their best off-road package, can’t expect the best mileage.
for sure, that's why I am pretty happy with that as a start. As this is the 5th 3.0 Duramax I have owned, my previous one actually had these wheels and tires added as well as a small lift, so i am able to compare
Much better mpg than my Jeep Gladiator.
Did they both have skid plates? That could make a difference if you are mostly highway
Same like my trail boss 2023
@DemonWorks
What's the app you were using?
Fuelly, on iphone but also available for android.
I like this truck and comparing to the high country. What truck would you get if they both had the 3.0 diesel?
I really like the max tow gearing but I also really like the looks and suspension of the ZR2. Tough call.
Have you thought about installing the titan xl fuel tank?
No plans at this time.
Question. Using I dash I see and monitor fuel temperature. Where in the fuel system is this measuring? The rail? The tank? Will these 3.0 recirculate warmer fuel back into the tank or is it contained in the common rail.
Yea I monitor Def temp too. It freezes then suspends the float/Def gauge.
I average 22 on a at4
You think you will miss the Max tow package on this truck? Do you think if you were to lift this new truck a bit more and add 35's it would hurt the mileage bad?
I think 35s would kill the mileage with these gears. If 3.73, not nearly as bad. I don't miss the max tow, currently. I have a stack of mods to install on the truck to help get it optimized.
@@DemonWorks okk
@@DemonWorks I'm on the fence with an Elevation and AT4 1500 and the only reason for the elevation is the max tow. However it will lack quite a few other options I like. I will most likely lift it to get 35's on it though. I have a 7x14' cargo trailer I pull with my Harley every now and then also. I'm coming from 6.6 Duramax's so it's going to be a learning curve.
I’m at 19L/100km this week in -40. That’s like 12.5mpg.
that's cold !!!
Where you running 4WD or AWD much during this tank of fuel?
24 TB w/ LZ0. Still have codes that is prohibiting the CA smog test to be performed. Any suggestions?
Have you taken it to the dealer? They can get an engineer involved if it’s too difficult for them.
Do you regret getting the 3.23 gears or not?
I had no choice, it's a ZR2. Yes, i would rather have the 3.73 gears in the ZR2 - I discuss it here: ruclips.net/video/QEQk8ubcyQo/видео.html
I have a 6.2L ZR2 and have been thinking about getting one with the Duramax. What are the gages you have and how do they hook up to get the information?
Banks idash gauges. He has a video on installing them. A cable runs down to the OBDII port. Really clean install.
You are a Chevy mechanic. On my 2021 Chevy 3.0 I have 46,600 miles. Is it safe and okay to do the transmission service at 50,000 miles? I have done several long road trips and I’ve towed my 7,000lbs trailer a couple times
Absolutely change it! Severe duty is rated at 45k intervals www.duramaxnews.com/post/maintenanceschedule
@@DemonWorks so I should change it asap or I’m good to wait at 50,000 miles?
my suggestion is to change asap. I do have a video on changing if you were to do it yourself@@ericjenkins3424
Snow provides an insane amount of resistance. That’s not helping your mileage either.
Have a 2021 LTZ 3.0 Winter driving ànd fuel blends pretty consistently knock off 1 to 2 MPG
Obviously...lifted truck with bigger tires...can't compared it with your old High Country.
Actually, I believe I can compare since I ran ZR2 wheels/tires on the High Country as well as a lift. The mpg is pretty close to that truck in that setup, I also mentioned in the video I was pretty happy with the results being so new and winter fuel as well as the remote starts I have been doing.
Weak
Bro